Primarily a boy's name · 100% boys
→ See names similar to Seiji · Popular names of the 2000s · Boys names starting with S
Rank is among all boys' names registered that year.
| Year | Babies | Rank |
|---|---|---|
| 1914 | 6 | #3,212 |
| 1917 | 5 | #4,487 |
| 1919 | 5 | #4,705 |
| 1920 | 6 | #4,207 |
| 1921 | 5 | #4,876 |
| 1922 | 8 | #3,489 |
| 1923 | 11 | #2,750 |
| 1924 | 11 | #2,798 |
| 1925 | 12 | #2,565 |
| 1926 | 8 | #3,343 |
| 1927 | 5 | #4,703 |
| 1929 | 8 | #3,213 |
| 1934 | 5 | #4,132 |
| 1937 | 6 | #3,475 |
| 1938 | 6 | #3,482 |
| 1939 | 5 | #3,902 |
| 1970 | 5 | #5,320 |
| 1974 | 5 | #5,875 |
| 1977 | 5 | #6,698 |
| 1978 | 5 | #6,603 |
| 1979 | 8 | #4,782 |
| 1982 | 9 | #4,528 |
| 1984 | 5 | #7,140 |
| 1985 | 8 | #5,070 |
| 1989 | 9 | #5,523 |
| 1990 | 5 | #9,271 |
| 1992 | 9 | #6,055 |
| 1993 | 5 | #9,921 |
| 1994 | 5 | #9,989 |
| 1995 | 13 | #4,739 |
| 1996 | 8 | #7,004 |
| 1997 | 11 | #5,587 |
| 1998 | 9 | #6,745 |
| 1999 | 10 | #6,434 |
| 2000 | 7 | #8,973 |
| 2001 | 10 | #6,855 |
| 2002 | 12 | #6,009 |
| 2003 | 11 | #6,646 |
| 2004 | 10 | #7,430 |
| 2005 | 13 | #6,157 |
| 2006 | 14 | #6,041 |
| 2007 | 19 | #4,951 |
| 2008 | 13 | #6,700 |
| 2009 | 7 | #10,780 |
| 2010 | 12 | #7,024 |
| 2011 | 16 | #5,635 |
| 2012 | 15 | #5,940 |
| 2013 | 10 | #7,999 |
| 2014 | 12 | #6,983 |
| 2015 | 11 | #7,437 |
| 2016 | 7 | #10,548 |
| 2017 | 12 | #7,027 |
| 2018 | 6 | #11,894 |
| 2019 | 5 | #13,797 |
| 2020 | 10 | #7,952 |
| 2021 | 7 | #10,591 |
| 2022 | 7 | #10,663 |
| 2023 | 9 | #8,804 |
| 2024 | 8 | #9,694 |