Koji
- Gender
- Boy
- Origin
- Japanese
- UK rank, 2025
- #4,301 for boys
- US rank, 2025
- #3,378 for boys
Koji is a boys' name of Japanese origin. In 2025 it ranked 4,301st for boys in the UK (4 babies) and 3,378th for boys in the US (34 babies).
What does Koji mean?
Japanese
A male given name from Japanese.
From Wiktionary, CC BY-SA 4.0.
Is Koji a girl's or a boy's name?
Koji is a boys' name. In 2025, it was given to 4 boys in the UK and 34 boys in the US. Too few girls were given it to be listed.
How popular is Koji in the UK?
- Rank in 2025
- #4,301among boys
- Babies in 2025
- 4about 1 in 75,000 boys
- Five-year trend
- Risingup 75% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 4 boys in the UK were named Koji, making it the 4,301st most popular name for boys. Five years earlier, in 2020, it was 3,502nd. Its busiest year was 2023, with 6 boys.
Among boys in 2025, it was 4,212th in England and Wales.
Koji in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 4 | #4,301 |
| 2024 | 4 | #4,346 |
| 2023 | 6 | #3,279 |
| 2022 | 0 | – |
| 2021 | 5 | #3,614 |
| 2020 | 5 | #3,502 |
| 2019 | 3 | #4,913 |
| 2018 | 0 | – |
| 2017 | 0 | – |
| 2016 | 0 | – |
| 2015 | 4 | #4,086 |
| 2014 | 0 | – |
| 2013 | 0 | – |
| 2012 | 0 | – |
| 2011 | 0 | – |
| 2010 | 0 | – |
| 2009 | 3 | #4,691 |
How popular is Koji in the US?
- Rank in 2025
- #3,378among boys
- Babies in 2025
- 34about 1 in 50,000 boys
- Five-year trend
- Rising fastup 124% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 34 boys in the US were named Koji, making it the 3,378th most popular name for boys. Five years earlier, in 2020, it was 6,616th. It first appears in the records in 1922.
2025 had the most boys named Koji of any year since it first appeared, in 1922.
Half of all the boys named Koji in the US since 1880 were born between 1996 and 2019, the years shaded on the chart below.
Koji in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 34 | #3,378 |
| 2024 | 25 | #4,197 |
| 2023 | 33 | #3,472 |
| 2022 | 26 | #4,086 |
| 2021 | 19 | #4,932 |
| 2020 | 12 | #6,616 |
| 2019 | 15 | #5,808 |
| 2018 | 14 | #6,032 |
| 2017 | 13 | #6,334 |
| 2016 | 28 | #3,775 |
| 2015 | 17 | #5,285 |
| 2014 | 15 | #5,729 |
| 2013 | 18 | #4,978 |
| 2012 | 14 | #5,995 |
| 2011 | 14 | #5,939 |
| 2010 | 21 | #4,516 |
| 2009 | 15 | #5,796 |
| 2008 | 21 | #4,537 |
| 2007 | 17 | #5,207 |
| 2006 | 11 | #6,899 |
| 2005 | 18 | #4,626 |
| 2004 | 13 | #5,807 |
| 2003 | 14 | #5,265 |
| 2002 | 13 | #5,388 |
| 2001 | 10 | #6,438 |
| 2000 | 14 | #5,034 |
| 1999 | 7 | #7,867 |
| 1998 | 9 | #6,308 |
| 1997 | 0 | – |
| 1996 | 7 | #7,129 |
| 1995 | 13 | #4,502 |
| 1994 | 5 | #8,794 |
| 1993 | 0 | – |
| 1992 | 14 | #4,106 |
| 1991 | 8 | #5,934 |
| 1990 | 10 | #4,986 |
| 1989 | 6 | #6,934 |
| 1988 | 6 | #6,420 |
| 1987 | 0 | – |
| 1986 | 7 | #5,327 |
| 1985 | 6 | #5,780 |
| 1984 | 18 | #2,612 |
| 1983 | 12 | #3,410 |
| 1982 | 5 | #6,383 |
| 1981 | 0 | – |
| 1980 | 5 | #6,248 |
| 1979 | 0 | – |
| 1978 | 0 | – |
| 1977 | 0 | – |
| 1976 | 0 | – |
| 1975 | 6 | #4,795 |
| 1974 | 7 | #4,188 |
| 1973 | 5 | #5,099 |
| 1972 | 9 | #3,342 |
| 1971 | 0 | – |
| 1970 | 0 | – |
| 1969 | 0 | – |
| 1968 | 0 | – |
| 1967 | 0 | – |
| 1966 | 0 | – |
| 1965 | 0 | – |
| 1964 | 0 | – |
| 1963 | 0 | – |
| 1962 | 0 | – |
| 1961 | 0 | – |
| 1960 | 0 | – |
| 1959 | 0 | – |
| 1958 | 0 | – |
| 1957 | 0 | – |
| 1956 | 0 | – |
| 1955 | 0 | – |
| 1954 | 0 | – |
| 1953 | 0 | – |
| 1952 | 0 | – |
| 1951 | 0 | – |
| 1950 | 0 | – |
| 1949 | 0 | – |
| 1948 | 0 | – |
| 1947 | 0 | – |
| 1946 | 0 | – |
| 1945 | 0 | – |
| 1944 | 0 | – |
| 1943 | 0 | – |
| 1942 | 0 | – |
| 1941 | 0 | – |
| 1940 | 0 | – |
| 1939 | 0 | – |
| 1938 | 0 | – |
| 1937 | 0 | – |
| 1936 | 0 | – |
| 1935 | 0 | – |
| 1934 | 0 | – |
| 1933 | 0 | – |
| 1932 | 0 | – |
| 1931 | 0 | – |
| 1930 | 0 | – |
| 1929 | 0 | – |
| 1928 | 0 | – |
| 1927 | 0 | – |
| 1926 | 6 | #3,706 |
| 1925 | 5 | #4,195 |
| 1924 | 0 | – |
| 1923 | 0 | – |
| 1922 | 5 | #4,305 |
Names like Koji
Names given in the same years and the same naming tradition, with a similar sound.
Loki Kairo Rumi Ruairi Yug Kenzo Yusuf Minh Shko Benji Kaito Yitzchok
Names related to Koji
More Japanese names
Kobe Kaizen Raiden Ren Akari Ronin Kyomi Akira Yuna Emi Kiyomi Kairi Miya Kenji Reo Jiraiya
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland), Baby names (Northern Ireland Statistics and Research Agency) and Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Koji: name meaning, origin and popularity”, https://www.nameling.co.uk/names/koji, updated 20 October 2026.