Nii is a very rare variant of Nia that was most common in the 1990s and has all but disappeared.
Nii is a boy name. It last appears in U.S. records in 2014. Nii first appears in 1978 and peaked in 1999 (8 births).
| Year | U.S. births | U.S. + territories | Rank |
|---|---|---|---|
| 2014 | 6 | 6 | #11,721 |
| 2006 | 5 | 5 | #13,441 |
| 2005 | 8 | 8 | #8,868 |
| 2002 | 5 | 5 | #11,942 |
| 1999 | 8 | 8 | #7,666 |
| 1997 | 6 | — | #8,944 |
| 1982 | 7 | — | #5,434 |
| 1980 | 5 | — | #6,975 |
| 1978 | 7 | — | #4,892 |