Tetsuo is a very rare boys' name that was most common in the 1920s and has all but disappeared.
Tetsuo is a boy name. It last appears in U.S. records in 1944. Tetsuo first appears in 1915 and peaked in 1924 (26 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1944 | 5 | — | #3,850 |
| 1935 | 7 | — | #3,231 |
| 1934 | 13 | — | #2,116 |
| 1933 | 6 | — | #3,602 |
| 1930 | 9 | — | #2,995 |
| 1929 | 10 | — | #2,745 |
| 1928 | 14 | — | #2,255 |
| 1927 | 20 | — | #1,789 |
| 1926 | 13 | — | #2,419 |
| 1925 | 22 | — | #1,671 |
| 1924 | 26 | — | #1,526 |
| 1923 | 18 | — | #1,936 |
| 1922 | 23 | — | #1,638 |
| 1921 | 20 | — | #1,821 |
| 1920 | 13 | — | #2,441 |
| 1919 | 9 | — | #3,096 |
| 1918 | 12 | — | #2,521 |
| 1917 | 10 | — | #2,710 |
| 1916 | 11 | — | #2,522 |
| 1915 | 7 | — | #3,360 |