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Masaichi

♂ Boy

Pronounced mah-sah-EE-chee /mɑːsɑːˈiːtʃi/Low

Meaning: Masaichi joins masa, often meaning true, right, or prosperous, with ichi, one or first, a combination frequently read as first true son, though the exact meaning depends on the kanji chosen.Low

In 30 seconds: Masaichi combines masa, true or right, with ichi, one or first, often read together as first true son (said mah-sah-EE-chee).

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Origin LowJapanese

MeaningMasaichi joins masa, often meaning true, right, or prosperous, with ichi, one or first, a combination frequently read as first true son, though the exact meaning depends on the kanji chosen.

U.S. rank (1933)#3512 ↗ Rising

1933 U.S. births6 boys (0.00% of U.S. boys)

Peak year1918

Total births (all-time)≈ 159

Popularity in the U.S. · SSA data

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

SSA data updated May 2026. How we source & verify this data.

History & Origin

Masaichi appears in American records between 1912 and 1933, part of the early-twentieth-century Japanese-American immigrant, or Issei, naming pattern.

It stayed rare and closely tied to that first-generation immigrant cohort, given to only a couple dozen boys a year at its 1918 peak before the span closed out by the early 1930s.

Did you know? Because Japanese names can be written with different kanji sharing the same sound, the precise meaning of any Masaichi depends on which characters a family chose.

Overall data confidence 45%

References - Masaichi — Japanese masa + ichi compound; Issei immigrant-era naming; meaning kanji-dependent

Variations

MasaichirouMasayukiShoichi

Nicknames

Masa

Famous Bearers

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If you like Masaichi…

Kenichi— a like Japanese name built on the same -ichi first-son ending

Yasuo— another Japanese boy's name from the same early-1900s cohort

Isamu— shares the pre-WWII Japanese-American naming era

Tomeko— a related name from the same immigrant generation's naming pool

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Frequently Asked

What does the name Masaichi mean?

Masaichi combines masa, true or right, with ichi, one or first, often read as first true son, though this depends on the kanji used.

How do you pronounce Masaichi?

It's said mah-sah-EE-chee /mɑːsɑːˈiːtʃi/, four syllables.

Is Masaichi a boy or girl name?

Masaichi is used as a boy's name.

How popular is Masaichi?

It stayed rare in American records, tied closely to the early-twentieth-century Japanese immigrant generation before the span closed by the nineteen-thirties.