Japanese Names That Mean Moonlight: Moon, Light, and Night Names

Short answer

• Almost no Japanese given name translates word for word as moonlight. Moonlight itself is a word, not a common given name: gekkou, written with the kanji for moon and for light, and tsukiakari, written with the kanji for moon and for light or brightness. What parents and writers actually use are names built on one half of that picture at a time. A name uses the moon kanji, such as Tsukiko, Mizuki, or Mitsuki in its beautiful moon writing. Or a name uses a light kanji, such as Akari or Hikari. Or a name belongs to the wider night sky, such as Hoshiko, built on the star kanji, or Seiya, built on star and night. That distinction is the whole value of this guide. Each name below is labeled by what its kanji genuinely say: moon, light, star, night, or none of those. Several names grouped under moonlight in name lists, and in the source material for this article, do not mean moonlight at all. Kaede means maple. Sayuri, in its best known writing, means small lily. Hiroto, Kaito, and Riku are popular boys names whose usual kanji say nothing about the moon. They are corrected in their own section below, not passed off as moon names. If you want the closest honest answer to the search, start with the moon section. Tsukiko, written moon plus child, is the classic. Mizuki and Mitsuki can both be written beautiful moon. Yuzuki can be written with a moon as its second character, although it can also be written without one. Runa is a modern name shaped by the Latin word luna, and it can be written with the single moon kanji. Kaguya is a literary name tied to a princess who came from the moon, and one of its writings means radiance plus night. None of those names means the word moonlight itself, and this guide never claims that they do.

The Words for Moon and Moonlight

Japanese separates ideas that English bundles together, and the names make more sense once the words are clear. Readers who have worked through a companion guide such as Japanese names that mean life will recognize the same pattern: a broad English word often splits into several narrower Japanese ones, and only some of them appear in names.

Tsuki: the moon

The ordinary word for the moon is tsuki, written with a single kanji. Read on its own, that character is tsuki. In compounds it is usually read getsu, and in the names of the months it is read gatsu, because the same character also means month. January is ichigatsu, February is nigatsu, and Monday, getsuyoubi, is literally the moon day of the week. That double duty explains a lot of confusion in name lists. A character that means moon in one word means month in another, and neither reading is wrong. Context decides.

In names, tsuki often changes its sound. When it follows another sound inside a name, the t softens and it is heard as zuki. That is why Mizuki and Yuzuki end the way they do. The character at the end is still the moon character. Only its pronunciation has shifted, a regular Japanese sound change called rendaku, where a consonant becomes voiced in the middle of a compound.

Gekkou and tsukiakari: moonlight itself

Moonlight has two common words. The first is gekkou, made of the moon character and the light character, read with their compound readings. It is the more literary of the two, the word of poems and song lyrics. The second is tsukiakari, made of the moon character and akari, light or brightness. It is the more everyday word, the light you would describe falling into a garden at night.

Neither word is a normal given name. Gekkou works as a title, an epithet, or a poetic pen name, and the source material for this article was right to say so. A child or a character actually called Gekkou would read as a statement rather than a name. The practical route to a moonlight feeling is to choose a name from the moon group or the light group below and let the combination of sound, kanji, and story carry the rest.

The moon in the calendar and the sky

A few more moon words help a reader judge name claims quickly. Mangetsu is the full moon, with the moon character read getsu. Mikazuki is the crescent moon, literally the third day moon, a memory of the old lunar calendar. Shingetsu is the new moon. Tsukiyo is a moonlit night: moon plus night. Tsukimi is moon viewing, the autumn custom covered below. If a supposed moon name contains no moon, light, star, or night character, it has almost certainly been grouped by mood rather than by meaning.

For the moon itself, rather than names, see when the next full moon falls, what color the moon is, and how the moon was formed.

The Kanji That Do the Work

Five characters account for nearly every honest name in this article. Learning to recognize them is a faster check than trusting any list, including this one.

• Moon: the character read tsuki on its own, getsu or gatsu in compounds, and zuki inside many names. It also means month.
• Light: the character read hikari on its own and kou in compounds. It is the second half of gekkou, moonlight.
• Bright: the character read aka or aki in name elements and mei in compounds. It covers bright, clear, and light, and it is the first sound of Akari.
• Night: the character read yoru or yo on its own and ya in compounds and names. It is the second half of Seiya in its star night writing, and of Kaguya in its radiance night writing.
• Star: the character read hoshi on its own and sei in compounds. It is the first half of Hoshiko and Seiya, and the word for a starry sky, hoshizora, is built from it plus the word for sky.

A Japanese given name is a choice of sound and a choice of characters at the same time. The same sound can be written many ways, and only some of those writings use the moon character. That is why every entry in this guide names a specific writing. A sound alone does not carry a meaning. The writing does.

Moon Names for Girls

These are the names whose specified writing genuinely contains the moon character. They are the center of this article, and the closest honest match to a moonlight search.

Tsukiko: child of the moon

Tsukiko is written moon plus child, the character for child that ends many traditional girls names. The gloss child of the moon is direct and accurate for that writing. It is a classic, slightly old-fashioned name in Japan, and precisely because it is so direct, it has become a favorite for moonlit characters in fiction. If you want one name that a Japanese reader will connect to the moon without any explanation, this is the safest choice in the guide.

Mizuki: beautiful moon, in one of several writings

Mizuki is a widely used name, more often for girls but also for boys, and its meaning depends entirely on its writing. Written with beautiful plus moon, it means beautiful moon. Written with water plus moon, it means water moon, a moon reflected or paired with water. Written with an auspicious character plus a hope character, it contains no moon at all. The beautiful moon writing is the one intended in this article, and it is a common, well documented writing. The lesson generalises: never buy or use the sound Mizuki as a moon name without fixing the writing first.

Mitsuki: beautiful moon, full moon, or light and hope

Mitsuki shows the same pattern even more clearly. One common writing pairs beautiful with moon, giving beautiful moon, and the same two characters can also be read Mizuki. Another writing is the full moon word itself. Other writings pair light with hope, giving light of hope, with no moon character present. Mitsuki is used for both girls and boys. In its moon writings it belongs in this section. In its light and hope writing it belongs in the light section.

Yuzuki: a moon name only in its moon writings

Yuzuki is a soft, modern sounding name that has become popular for girls, and it is a good test of careful reading. Written with gentle plus moon, it means gentle moon, the gloss the source material gave it. Written with dream plus moon, it means dream moon. But its most distinctive writings pair yuzu, the fragrant Japanese citrus fruit, with moon, tree, or hope characters. A Yuzuki written with yuzu plus tree is a citrus and tree name, not a moon name. Keep Yuzuki on a moonlight shortlist only if you also keep the moon writing attached to it.

Runa: a modern moon name shaped by luna

Runa is a modern Japanese girls name influenced by luna, the Latin word for moon, as pronounced in Japanese. Behind the Name records it as a modern name that can be written with the single moon character, read in an unusual name reading as runa, or with the moon character plus characters for greens, south, or other elements. That makes Runa a genuine moon name, but a modern and international one, not a classical Japanese one. For a character in a contemporary story, that can be a strength. For a name meant to feel traditional, Tsukiko or Mizuki is the better fit.

Kaguya: the princess from the moon

Kaguya needs its own explanation because its moon link is a story, backed by one strongly lunar writing. In The Tale of the Bamboo Cutter, often described as Japan oldest surviving prose tale, a bamboo cutter finds a tiny glowing girl inside a bamboo stalk. She grows into Kaguya-hime, a princess of shining light, and in time reveals that she came from the moon and must return to it. One documented writing pairs radiance with night. Another pairs moon with princess. As a given name, Kaguya is classical and literary rather than everyday, and Japanese readers will think of the tale first.

Moon Names for Boys and Unisex Use

Honesty matters most in this section, because English language lists often fill boys moon lists with names that do not contain the moon at all. Traditional Japanese boys names built directly on the moon character are uncommon. That is a fact about naming custom, not a gap to be disguised.

The strongest options are the unisex ones already covered. Mitsuki is used for boys as well as girls, including in its beautiful moon and full moon writings, and Mizuki is also occasionally chosen for boys. Tsuki itself, the single moon word, appears in fiction as a short, direct name, but it reads more as a word or a nickname than as a typical registered boys given name. Treat it as a fiction choice, not as a common real world one.

Gekkou, the moonlight word, belongs in the same cautionary group. It is better as a title, an epithet, a stage name, or the name of a place or work than as a boys given name. The source material said the same, and verification supports it.

Tsukuyomi is sometimes offered on lists, and it should not be used casually. Tsukuyomi, written moon plus reading or counting, is the moon kami, the god of the moon in Shinto, one of the three noble children born from the creator Izanagi, alongside the sun goddess Amaterasu and the storm god Susanoo. It is a divine name from the eighth century chronicles, the Kojiki and the Nihon Shoki, not an ordinary given name.

For a calm, night toned boys name, the light and night sections below are the honest place to look. Seiya, in its star plus night writing, and Hikaru, meaning light or brightness, give the feeling without a false moon claim. A cross language comparison is in the guide to the name Amara in Arabic, and a very different naming system is surveyed in Altmer names, where invented names follow lore patterns rather than kanji.

Light Names: the Other Half of Moonlight

Moonlight is moon plus light, so light names are a legitimate part of this topic, as long as they are labeled light and not moonlight.

Akari: light and lamp glow

Akari is a popular girls name, occasionally used for boys, built on the everyday noun akari, light or lamp glow. Behind the Name gives writings that combine bright or vermilion with village or jasmine characters, and name references also record a single light character writing. The image is warm and domestic: the glow of a lamp rather than a blaze. That is why Akari works so well for a moonlit character. The name itself says light, honestly, and a night scene supplies the moon.

Hikari and Hikaru: light itself

Hikari is the noun light itself, written with the single light character, the same character that forms the second half of gekkou. As a given name it is used for girls and boys. Hikaru is its close relative, written with the light character or with a radiance character meaning brightness, and also used across genders. Of all the light names, these two are the most literal. A character called Hikari under a full moon needs no invented translation to earn a place in a moonlight story.

Akira and other bright names

Akira, written with the bright character, means bright or clear. It does not mean moonlight, and it does not contain the moon character. It belongs in this guide only as a bright name that pairs naturally with night settings. The same applies to names built on the radiance character, which covers shining and sparkling. Brightness is a neighbor of moonlight, not a synonym for it, and this guide keeps that line visible wherever such names appear.

Star and Night Names

Starlight and night are the third ring of this topic. They share the sky with the moon, and they are often what a reader actually wants for a character or a child born at night. They still need their own labels.

Hoshiko and Hoshi: star names

Hoshiko is written star plus child: star child. The source material glossed it that way, and the writing supports it. Hoshi on its own is simply star, used as a name element and occasionally as a name. Neither name means moon or moonlight. Their place here is as night sky companions, the stars that appear in the same scene as the moon. In Japanese the star character is read hoshi alone and sei in compounds, and a starry sky is hoshizora.

Seiya: star night, in one writing

Seiya is a boys name with several possible writings. The writing that earns it a place here pairs star with night: star night. Other writings of Seiya have nothing to do with the sky. As with Mizuki and Yuzuki, the writing is the meaning. A Seiya written star plus night is one of the most precisely night toned real names in this guide, and a strong choice where a moon name for a boy proved hard to find honestly.

Hoshizuki and Yozora: sky words to use carefully

Hoshizuki, star plus moon, is recorded as a Japanese name form, and it is one of the few forms that puts a star and the moon in a single name. It is uncommon, and it should be presented as uncommon. Yozora is first of all the ordinary word for the night sky, night plus sky. It appears as a character name in modern fiction, but as a real world given name it is unusual.

Midnight, moon dancer, and moonlight flower

The source material handled three ideas with unusual honesty, and this adaptation keeps its verdicts. Midnight is a time of night. Japanese has words for the middle of the night, but midnight is not a name meaning, and no name in this guide is glossed as midnight. Moon dancer is a poetic story image for a graceful night character. It is not a dictionary meaning of any name here, and it should be used as a description or an epithet, never as a translation. Moonlight flower is likewise a scene: a pale flower seen by moonlight. A flower name can carry that scene in a story, but the scene does not change what the flower name means.

Names Grouped With Moonlight That Do Not Mean Moonlight

This section corrects the rest of the source list. Every name here is a real name with a real meaning. None of those meanings is moon, moonlight, or night, and keeping them in a moonlight list without that warning would mislead a parent or a writer.

• Kaede means maple, from the single maple character. It is a lovely autumn toned name, and autumn is the moon viewing season, but the name itself is a tree name. A moonlit autumn scene in a story is a setting, not a meaning.
• Sayuri, in its best known writing, pairs small with lily: small lily. Other writings exist, including early lily and several sound based combinations, and none of them contains the moon character. Its pale flower image is the source of the moonlight flower idea above. The image is usable in fiction. The moon claim is not.
• Hiroto is a popular boys name whose common writings combine big, great, or esteem with person, soar, or a constellation character. Great flight is one fair summary of a common writing. It is not a moon name, and its brightness is a matter of feeling, not kanji.
• Souta, more often romanized Sota, is a modern boys name. One documented writing pairs the sound of wind rushing with a big or thick character. Other writings exist. None of the usual ones is a moon writing, so its calm night feeling is an association only.
• Riku, written with the land character, means land. The source material said land, and then placed the name in a moon list because of a moonlit landscape image. The meaning is land. The landscape is a scene a writer can build, not a translation.
• Kaito is a popular boys name written sea plus a constellation character, or sea plus soar: sea and flight is a reasonable summary of the second writing. Interestingly, the constellation character gives Kaito a distant link to the stars, but the name does not contain the moon character, and it is not a moonlight name. A moonlit sea is, again, a scene.

Dropping these names from the moon lists does not make them bad names. It makes the guide trustworthy, which matters more for a real naming decision than a long list does. Readers comparing how other naming guides handle the same honesty problem may enjoy the moon adjacent lifestyle pieces on new moon and full moon planning, full moon journaling prompts, and the moonstone guide, where moon language is used as tradition and reflection rather than as a name claim.

The Moon in Japanese Naming Culture

Moon names carry weight in Japan because the moon itself carries weight. The autumn custom of tsukimi, moon viewing, dates back to the Heian period, when aristocrats held moon viewing parties, and it later spread widely and joined with harvest thanksgiving. On the fifteenth night of the eighth month of the old calendar, usually in September, families still gather to view the full moon, display pampas grass, and offer round rice dumplings, tsukimi dango, whose shape recalls the moon. A child named for the moon in autumn is named inside that tradition, whether the parents say so or not.

Folklore adds a second layer. Where Western stories place a man in the moon, Japanese tradition places a rabbit there, pounding rice cakes with a mortar. In the story, a rabbit offers its own life to feed a hungry traveller and is taken to live on the moon in reward. It is one reason mochi, the pounded rice cake, belongs to moon viewing. A moon name can quietly carry that kindness story as well as the beauty of the moon itself.

The third layer is poetry. The moon is one of the oldest subjects in Japanese verse, a symbol of beauty that changes and does not last. A famous anecdote credits the novelist Natsume Soseki with teaching that I love you should be rendered in Japanese not directly, but as the moon is beautiful, is it not. The anecdote survives because it captures the register of moon language in Japanese: indirect, seasonal, and restrained. Moon names sit in that register, suggesting calm and beauty rather than power.

How to Choose a Moonlight Name

Start by choosing your lead image, as the source material advised: moon, light, or night. A name that tries to be all three at once will usually be none of them clearly, because a single attested writing rarely contains all three ideas. Moon first gives you Tsukiko, Mizuki, Mitsuki, Yuzuki, Runa, and Kaguya. Light first gives you Akari, Hikari, and Hikaru. Night first gives you Seiya in its star night writing, and the star names Hoshiko and Hoshi beside it.

Then fix the writing before you fix the name. Write down the exact kanji, check each character in a dictionary, and check the whole form in a name reference. If a seller, a generator, or a list gives you a meaning without a writing, treat the meaning as unverified. That single habit prevents most of the errors corrected in this guide, including moon claims for maple, lily, land, and sea names.

Next, say the full name aloud, in the order it will actually be used. In Japan the family name comes first, so test the given name after the family name as well as before it, and check for awkward sound collisions. For a real child in Japan there is also a practical layer: characters must be among those permitted for use in names, and unusual readings can burden a child with a lifetime of explanations.

For fiction, the rules loosen but the honesty rule does not. Let a moonlit scene carry an image that the name itself does not contain. A Kaito seen across a night sea, or a Sayuri seen as a pale flower in moonlight, is good writing. Claiming that Kaito means moonlight, or that Sayuri means moonlight flower, is an error that readers who know Japanese will catch.

Finally, match the name to its era and register. Tsukiko and Kaguya feel classical and literary. Mizuki, Mitsuki, and Yuzuki feel contemporary. Runa feels modern and international. Gekkou and Tsukuyomi are not ordinary given names at all.

Frequently Asked Questions

What is the Japanese word for moonlight?

There are two common words. Gekkou, written moon plus light, is the more literary word. Tsukiakari, written moon plus light or brightness, is the more everyday word. The word for the moon alone is tsuki. Neither moonlight word is a common given name, so names that evoke moonlight are normally built on the moon character or on a light character, not on the moonlight word itself.

Is there a Japanese name that literally means moonlight?

No common given name does. That is the central honest answer to this search. The closest genuine options are names written with the moon character, such as Tsukiko, Mizuki, or Mitsuki in a moon writing, and names written with a light character, such as Hikari, which supplies the light half of the word gekkou. Lists that present a long set of names as literal moonlight translations are grouping by mood.

Is Tsukiko a moonlight name?

Tsukiko, written moon plus child, means child of the moon. It is a moon name, not a moonlight name in the strict sense, and it is the classic choice for a moonlit character or for a child whose parents want an unmistakable moon link. Its moon meaning does not depend on an unusual writing, which is part of its strength.

What does Mizuki mean?

It depends on the writing, and any answer that skips that point is incomplete. Written beautiful plus moon, Mizuki means beautiful moon. Written water plus moon, it means water moon. Written with an auspicious character and a hope character, it contains no moon at all. Fix the writing first, and the meaning follows.

Is Gekkou a name?

Gekkou is the word for moonlight, not a normal given name. It works as a title, an epithet, a pen name, or the name of a work or place. The same caution applies to Tsukuyomi, which is the name of the Shinto moon god from the Kojiki and Nihon Shoki, and to Yozora, which is the ordinary word for the night sky. Words and divine names can be used creatively, but they should not be presented as ordinary baby names.

What is a moon dancer name?

There is no Japanese name whose dictionary meaning is moon dancer. Moon dancer is a poetic story image for a graceful character seen at night. Use it as a description, a nickname inside a story, or an epithet. Do not present it as the translation of Tsukiko, Kaguya, or any other name in this guide.

Which moon name works best for a boy?

The honest shortlist is short. Mitsuki, in a moon writing, and Mizuki are both used for boys as well as girls. Seiya, written star plus night, gives a precise night sky meaning in a boys name. Beyond those, most traditional boys names do not use the moon character, and lists that suggest otherwise usually rely on names whose kanji say land, sea, or flight. Choosing one of those names is fine. Choosing it under a moon meaning is not.

How is moonlight different from moon and light in Japanese naming?

The moon is the object, tsuki. Light is the glow, hikari or akari. Moonlight is the glow of that specific object, gekkou or tsukiakari. In naming, the three ideas produce three different name groups: moon names with the moon character, light names with a light or bright character, and the combined feeling that only a scene, a story, or a paired given and family name can supply. Keeping the groups labeled is what makes a shortlist usable.

Sources & references

• Team Japanese, How to Say Moon in Japanese: tsuki, gekkou, mangetsu, mikazuki, tsukimi, and the rabbit on the moon. https://teamjapanese.com/moon-in-japanese/
• Behind the Name, Japanese names by meaning, bright and light: Akari and Hikari entries, including kanji and meanings. https://www.behindthename.com/names/usage/japanese/meaning/bright,light,shining,radiant,lamp
• Behind the Name, Japanese names ending in to: Hiroto and Kaito entries, including kanji and meanings. https://www.behindthename.com/names/usage/japanese/end/to
• Behind the Name, submitted Japanese names: Runa, recorded as a modern name from the moon character influenced by Latin luna; Hoshizuki, star plus moon; Kaede forms from the maple character. https://www.behindthename.com/submit/names/usage/japanese/17 and https://www.behindthename.com/submit/names/gender/feminine/usage/japanese/4
• Japanese Names info, Mizuki: most common writings including beautiful moon, water moon, and auspicious hope. https://japanese-names.info/first-name/mizuki-2/
• Japanese Names info, Mitsuki: most common writings including beautiful moon and light hope, with the note that the beautiful moon writing is shared with Mizuki. https://japanese-names.info/first-name/mitsuki-2/
• Japanese Names info, Yuzuki: writings including yuzu plus moon, gentle plus moon, and dream plus moon. https://japanese-names.info/first-name/yuzuki-2/
• Japanese Names info, Akari: light and lamp glow, with bright and light character families. https://japanese-names.info/first-name/akari-2/
• Japanese Names info, Kaguya: radiance plus night and moon plus princess writings, and the Tale of the Bamboo Cutter origin. https://japanese-names.info/first-name/kaguya-2/
• Japanese Names info, Sayuri: small lily writing and other writings. https://japanese-names.info/first-name/sayuri-2/
• UniHongo, Kanji for Moon: readings tsuki, getsu, and gatsu, month names, Monday, and moon viewing vocabulary. https://unihongo.com/kanji-for-moon
• UniHongo, Kanji for Star: hoshi and sei readings, hoshizora, and star vocabulary. https://unihongo.com/kanji-for-star
• Wikipedia, Tsukuyomi-no-Mikoto: the moon kami, the compound of tsuku, moon, and yomi, reading or counting, and the Kojiki and Nihon Shoki accounts. https://en.wikipedia.org/wiki/Tsukuyomi-no-Mikoto
• Wikipedia, Sayuri (given name): written forms including small lily. https://en.wikipedia.org/wiki/Sayuri_(given_name)