Isamu is a rare boys' name that peaked in 1922 and has since faded.
Isamu is a boy name. It last appears in U.S. records in 2023. Isamu was first reported in SSA data in 1912 and peaked in 1922 (40 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2023 | 6 | 6 | #11,375 |
| 2009 | 8 | 8 | #9,309 |
| 2008 | 6 | 6 | #11,606 |
| 2007 | 5 | 5 | #13,094 |
| 2006 | 7 | 7 | #9,975 |
| 2001 | 5 | 5 | #11,240 |
| 2000 | 5 | 5 | #11,054 |
| 1987 | 5 | — | #7,418 |
| 1938 | 7 | — | #3,011 |
| 1935 | 7 | — | #3,101 |
| 1934 | 12 | — | #2,182 |
| 1933 | 11 | — | #2,288 |
| 1932 | 8 | — | #2,973 |
| 1931 | 7 | — | #3,236 |
| 1930 | 21 | — | #1,623 |
| 1929 | 14 | — | #2,140 |
| 1928 | 18 | — | #1,866 |
| 1927 | 28 | — | #1,421 |
| 1926 | 26 | — | #1,445 |
| 1925 | 39 | — | #1,132 |
| 1924 | 36 | — | #1,212 |
| 1923 | 34 | — | #1,244 |
| 1922 | 40 | — | #1,126 |
| 1921 | 30 | — | #1,377 |
| 1920 | 30 | — | #1,339 |
| 1919 | 22 | — | #1,599 |
| 1918 | 29 | — | #1,327 |
| 1917 | 30 | — | #1,250 |
| 1916 | 22 | — | #1,530 |
| 1915 | 17 | — | #1,744 |
| 1914 | 10 | — | #2,182 |
| 1913 | 11 | — | #1,738 |
| 1912 | 6 | — | #2,412 |