Kosuke

Boys' name

From Japanese こうすけ; literal meaning unconfirmed

Kosuke has been given to 46 babies in the U.S. since 1987. 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 1996, with 7 recorded.

Babies named Kosuke, 2009

1 in 637,000

Kosuke over time, 1880–2025

Boys

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Kosuke: meaning, origin, and history

From Japanese こうすけ; literal meaning unconfirmed

Japanese

What Kosuke means

Kosuke is a given name.

Origin, language, and formation

Kosuke is used in English. Its origins include Japanese.

Kosuke comes through Japanese こうすけ.

American usage and historical context

In the United States, 46 boys were recorded with the name Kosuke between 1987 and 2009. Its highest annual count was 7 in 1996; its best national rank was #7,599 in 1996.

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 Kosuke?

Kosuke had fewer than 5 recorded uses in 2025, so these figures use 2009, the last year it was published.

Among all babies, 2009: 1 in 637,000; 6 of 3,820,315 births
Among boys only: 1 in 331,000; <0.01% of boys
Rank, 2009: Unranked; Fewer than 5 uses
Coin-flip room size: 441,341 kids; Even odds of a second one

Where Kosuke 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 2009 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 441,341 children born in 2009 and it's an even bet that one of them is another Kosuke. In a class of 30 the chance is Under 1%.

When Kosukes were born

Half of everyone ever recorded as Kosuke was born before 1996 — so the typical Kosuke is around 29 today.

Median birth year: 1996; About 29 years old
Biggest decade: 2000s; 50.0% of all use
Born in the last 25 years: 100.0%; A modern name
Recorded since 1950: 46; People you could plausibly meet

Choose a decade

2000s — 50.0% of all recorded uses (23).

Is Kosuke 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 1996 (7)
Years since peak: 29; Years
Year-to-year steadiness: Shifting; 20.0% average annual change
Best rank ever: #7,599; 1996

Spellings of Kosuke

Kosuke is not the most common spelling — Josue is, with 99.9% against Kosuke's 0.08%.

Josue99.9%57,689
Kosuke0.08%46

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.

Kosuke 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: #7,599; 1996
Peak year: 1996; 7 that year
First recorded: 1987
Last recorded: 2009
All-time count: 46
Count in 2025: Under 5

Names similar to Kosuke

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

Kosmo Kosmas Yasuke Koston Kostas Sasuke Kosei Sosuke Kosta Yosuke Kosten Kosmos Kensuke Kosi Bruke Ryosuke Daisuke Yusuke Jonluke Shunsuke Keisuke Eisuke Kostanty Juke

Sibling names for Kosuke

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

Iman Breann Cinthia Tristan Lexus Estefania Carli Salena

For a brother

Austyn Claudio Dontae Deion Hernan Dangelo Samual Tristin

Explore around Kosuke

Top names of 1996, Kosuke's peak year The 1990s in full Other names that peaked in 1996 Boys' names starting with K