Masami

Boys' name

Become or right, proper

Masami has been given to 298 babies in the U.S. since 1912. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1917, with 35 recorded.

Babies named Masami, 1936

1 in 346,000

Masami over time, 1880–2025

BoysGirls

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Masami: meaning, origin, and history

Become or right, proper

Japanese

What Masami means

Masami means “become or right, proper”.

Documented naming usage and pronunciation

Masami is used in Japanese.

Another recorded pronunciation is /mä.sä.mi/ for Masami.

Origin, language, and formation

Masami is used in English. Its origins include Japanese.

American usage and historical context

In the United States, 288 boys were recorded with the name Masami between 1912 and 1936. Its highest annual count was 35 in 1917; its best national rank was #1,145 in 1917.

In the United States, 10 girls were recorded with the name Masami between 1978 and 2024. Its highest annual count was 5 in 1978; its best national rank was #10,770 in 1978.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Masami?

Masami had fewer than 5 recorded uses in 2025, so these figures use 1936, the last year it was published.

Among all babies, 1936: 1 in 346,000; 6 of 2,077,561 births
Among boys only: 1 in 173,000; <0.01% of boys
Rank, 1936: Unranked; Fewer than 5 uses
Coin-flip room size: 240,010 kids; Even odds of a second one

Where Masami sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 1936 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%

Class of 30Under 1%

Grade of 100Under 1%

School of 500Under 1%

Put another way: gather 240,010 children born in 1936 and it's an even bet that one of them is another Masami. In a class of 30 the chance is Under 1%.

When Masamis were born

Half of everyone ever recorded as Masami was born before 1922 — so the typical Masami is around 103 today.

Median birth year: 1922; About 103 years old
Biggest decade: 1920s; 51.0% of all use
Born in the last 25 years: 100.0%; A modern name
Recorded since 1950: 0; People you could plausibly meet

Choose a decade

1920s — 51.0% of all recorded uses (147).

Is Masami rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago: —; Not ranked then
Rank vs 5 years ago: New entry; Not ranked then
Rank vs 10 years ago: —; Not ranked then
Births vs 10 years ago: —; Not published both years
Share of its own peak: 0%; Peak was 1917 (35)
Years since peak: 108; Years
Year-to-year steadiness: Volatile; 49.5% average annual change
Best rank ever: #1,145; 1917

Spellings of Masami

Masami is not the most common spelling — Makai is, with 34.1% against Masami's 1.1%.

Makai34.1%9,298
Sami19.4%5,303
Malaki17.6%4,786
Makari6.7%1,815
Jasai6.0%1,647
Hasani4.3%1,184
Kasai3.9%1,065
Masao3.7%1,018

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Masami is used

Across 1910–2025, Masami was most concentrated in Hawaii — about 1 in 4,000 boys, against 1 in 83,716 across all states with data. It was least common in California (1 in —).

025 per 100,000

State popularity map

Most concentrated

1Hawaii1 in 4,000
2California1 in —

Shading is the share of that state's recorded boys given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings. Masami has too little recent state data to map, so this covers all years from 1910.

Masami by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025: Unranked
Trend vs 5 yrs ago: —
Best rank ever: #1,145; 1917
Peak year: 1917; 35 that year
First recorded: 1912
Last recorded: 1936
All-time count: 288
Count in 2025: Under 5

As a girl's name

Rank in 2025: Unranked
Trend vs 5 yrs ago: —
Best rank ever: #10,770; 1978
Peak year: 1978; 5 that year
First recorded: 1978
Last recorded: 2024
All-time count: 10
Count in 2025: Under 5

Names similar to Masami

Matched on shared beginnings and endings, similar length, and comparable popularity.

Masson Maston Master Massai Masud Masaki Masiyah Masiah Mase Masaru Masato Masai Masih Masin Masten Dyami Massie Masani Masir Massiah Masyn Masoud Viliami Massey

Sibling names for Masami

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

For a sister

Albina Nelle Orpha Antonette Harriette Winnifred Johnie Dovie

For a brother

Regis Rosario Lyman Winfield Dorsey Granville Abe Isadore

Explore around Masami

Top names of 1917, Masami's peak year The 1910s in full Other names that peaked in 1917 Boys' names starting with M