Seichi is a very rare boys' name that was most common in the 1920s and has all but disappeared.
Seichi is a boy name. It last appears in U.S. records in 1931. Seichi first appears in 1913 and peaked in 1922 (21 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 1931 | 5 | — | #4,248 |
| 1928 | 9 | — | #3,039 |
| 1927 | 7 | — | #3,728 |
| 1926 | 9 | — | #3,102 |
| 1925 | 9 | — | #3,117 |
| 1924 | 10 | — | #2,993 |
| 1923 | 11 | — | #2,749 |
| 1922 | 21 | — | #1,753 |
| 1921 | 17 | — | #2,046 |
| 1920 | 13 | — | #2,437 |
| 1919 | 14 | — | #2,244 |
| 1918 | 15 | — | #2,146 |
| 1917 | 9 | — | #2,915 |
| 1916 | 6 | — | #3,825 |
| 1915 | 11 | — | #2,431 |
| 1913 | 5 | — | #3,194 |