Seiji
Borrowed from Japanese せいじ (Seiji).
Every Seiji since 1914 — 517 of them. Popularity, births, and rankings for each year, from official Social Security records.
The story of Seiji
Seiji is rare for boys in the United States, ranked #9,569 in 2025 with 8 babies given the name. It is currently declining compared with a decade ago.
Since 1914, 517 American babies have been named Seiji. Its peak came in 2007, when 19 newborns received the name — the signature sound of the 2000s.
The chart above shows the full history: the popularity view (births per 1,000 babies) is the honest comparison across generations, since total US births have changed enormously since 1880. Switch to the rank view to see where Seiji stood among all boys' names in any year, or use the compare tool to plot it against other names.
Seiji year by year
Every year since 2001, and five-year steps back to 1880. Rank is within each sex.
| Year | Boys | Boys rank |
|---|---|---|
| 2025 | 8 | #9,569 |
| 2024 | 8 | #9,722 |
| 2023 | 9 | #8,809 |
| 2022 | 7 | #10,665 |
| 2021 | 7 | #10,599 |
| 2020 | 10 | #7,953 |
| 2019 | 5 | #13,805 |
| 2018 | 6 | #11,898 |
| 2017 | 12 | #7,029 |
| 2016 | 7 | #10,550 |
| 2015 | 11 | #7,437 |
| 2014 | 12 | #6,986 |
| 2013 | 10 | #7,999 |
| 2012 | 15 | #5,942 |
| 2011 | 16 | #5,636 |
| 2010 | 12 | #7,024 |
| 2009 | 7 | #10,780 |
| 2008 | 13 | #6,701 |
| 2007 | 19 | #4,951 |
| 2006 | 14 | #6,041 |
| 2005 | 13 | #6,159 |
| 2004 | 10 | #7,432 |
| 2003 | 11 | #6,647 |
| 2002 | 12 | #6,009 |
| 2001 | 10 | #6,855 |
| 2000 | 7 | #8,973 |
| 1995 | 13 | #4,739 |
| 1990 | 5 | #9,274 |
| 1985 | 8 | #5,070 |
| 1980 | — | — |
| 1975 | — | — |
| 1970 | 5 | #5,321 |
| 1965 | — | — |
| 1960 | — | — |
| 1955 | — | — |
| 1950 | — | — |
| 1945 | — | — |
| 1940 | — | — |
| 1935 | — | — |
| 1930 | — | — |
| 1925 | 12 | #2,565 |
| 1920 | 6 | #4,207 |
| 1915 | — | — |
| 1910 | — | — |
| 1905 | — | — |
| 1900 | — | — |
| 1895 | — | — |
| 1890 | — | — |
| 1885 | — | — |
| 1880 | — | — |
Famous people named Seiji
- Seiji Ozawa Conductor · b. 1935
- Seiji Ueda Astronomer · b. 1952
- Seiji Maehara Politician · b. 1962
- Seiji Kubo Soccer player · b. 1973
- Seiji Honda Soccer player · b. 1976
Ranked by global fame across Wikipedia editions (Pantheon project, MIT).
Frequently asked questions
What does the name Seiji mean?
Borrowed from Japanese せいじ (Seiji).
How popular is the name Seiji in 2025?
Seiji ranked #9,569 among boys' names in the United States in 2025, with 8 babies given the name, according to Social Security Administration data.
How many people are named Seiji?
517 babies have been named Seiji in the United States since 1914, based on Social Security card applications.
When was the name Seiji most popular?
Seiji peaked in 2007, when 19 newborns received the name.
Is Seiji a boy or girl name?
Seiji is overwhelmingly a boy's name — 100% of babies with the name.
Is the name Seiji rising or falling?
Seiji is declining — less popular now than a decade ago.
Who are famous people named Seiji?
Well-known people named Seiji include Seiji Ozawa (conductor), Seiji Ueda (astronomer), Seiji Maehara (politician).