Mitsu
Gender-neutral name · English · Japanese
Meaningoften light · Japanese
Mitsu is an English and Japanese gender-neutral name often meaning “light”. In Japan, parents often choose a name as much for the kanji characters behind it as for its sound, so the same name can carry several shades of meaning. A meaning like this gives a child something to grow into, and a good story to tell when someone asks about their name. It sounds soft and friendly, it's easy to spell and quick to call across a playground, and it pairs well with middle names of almost any length. It suits a boy or a girl equally well.
Did you know?
- GenerationMitsu peaked in 1922, which makes it a Greatest Generation name, think great-grandparents.
- HistoryMitsu first shows up in US birth records in 1922, the first year at least 5 babies got it. It has been in use for 103 years since.
US births per million girls, 1922–2025
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Popularity: U.S. Social Security Administration (babies with 5+ births per year).
About the name Mitsu
Mitsu is a gender-neutral name of English and Japanese origin meaning “often light”. Its two syllables give it an easy rhythm, and the open vowel at the end makes it sound soft and warm. It was most fashionable in the 1920s, which gives it a vintage, grandparent-chic charm. It's rarely heard today, so it stands out while still being a real, established name. It works for a boy or a girl, which suits parents who'd like a name that doesn't signal gender.
Origin:English namesJapanese names
More English names
- Girl name: Olivia · olive tree
- Girl name: Charlotte · free
- Boy name: Oliver · olive tree
- Boy name: Henry · ruler of the home
- Unisex name: James · supplanter
- Boy name: William · resolute protector
- Boy name: Benjamin · son of the right hand
- Boy name: Jack · God is gracious
Questions about the name Mitsu
What does the name Mitsu mean?
Mitsu means “often light” and comes from Japanese. Names built around “light” have been loved for generations, and give a child a meaning worth sharing when someone asks about their name. Other gender-neutral names with a similar meaning include Eleanor (“possibly light”), Ellie (“possibly light”), Lucy (“light”) and Lainey (“possibly light”).
What is the origin of the name Mitsu?
Mitsu is English and Japanese in origin. Names often travel between languages and cultures, which is why Mitsu turns up in more than one tradition. Other English names to consider are Olivia (“olive tree”), Charlotte (“free”), Oliver (“olive tree”) and Henry (“ruler of the home”).
Is Mitsu a boy or girl name?
Both. Mitsu is a true gender-neutral name used for boys and girls. That balance makes it a good pick if you'd like a name that doesn't signal gender.
How popular is the name Mitsu?
Mitsu is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 1922. It peaked at #5,009 in 1922, so it's a name with history that few kids share today.
What names are similar to Mitsu?
If you like Mitsu, you might also like Eleanor, Ellie, Lucy and Lainey.
What should I know before naming my baby Mitsu?
Mitsu is an English and Japanese gender-neutral name often meaning “light”. In Japan, parents often choose a name as much for the kanji characters behind it as for its sound, so the same name can carry several shades of meaning. A meaning like this gives a child something to grow into, and a good story to tell when someone asks about their name. It sounds soft and friendly, it's easy to spell and quick to call across a playground, and it pairs well with middle names of almost any length. It suits a boy or a girl equally well. Say it out loud with your last name and any middle names you're considering, and check the initials it makes.