Keiji is a very rare boys' name that peaked in 2009 and has grown less common since.
Keiji is a boy name. In 2025 it ranked #11,365 for boy births in the United States (and #23,422 across all names), given to 6 babies. Keiji first appears in 1923 and peaked in 2009 (15 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2025 | 6 | 6 | #11,365 |
| 2023 | 7 | 7 | #10,259 |
| 2022 | 6 | 6 | #11,621 |
| 2021 | 5 | 5 | #13,144 |
| 2020 | 7 | 7 | #10,099 |
| 2017 | 6 | 6 | #11,503 |
| 2016 | 7 | 7 | #10,227 |
| 2015 | 8 | 8 | #9,175 |
| 2014 | 10 | 10 | #7,863 |
| 2013 | 5 | 5 | #13,139 |
| 2012 | 12 | 12 | #6,840 |
| 2011 | 6 | 6 | #11,597 |
| 2010 | 8 | 8 | #9,256 |
| 2009 | 15 | 15 | #5,962 |
| 2008 | 5 | 5 | #13,620 |
| 2006 | 8 | 8 | #9,170 |
| 2005 | 8 | 8 | #8,720 |
| 2004 | 9 | 9 | #7,887 |
| 2003 | 5 | 5 | #11,876 |
| 1928 | 5 | — | #4,450 |
| 1927 | 6 | — | #3,985 |
| 1926 | 6 | — | #3,963 |
| 1924 | 5 | — | #4,685 |
| 1923 | 8 | — | #3,316 |