1912 U.S. National Championships – Women's singles
# 1912 U.S. National Championships – Women's singles

Mary Browne defeated Eleonora Sears 6–4, 6–2 in the tennis final of the 1912 U.S. Women's National Singles Championship. The event was held at the Philadelphia Cricket Club in Philadelphia in the United States from June 10 through June 15, 1912. The defending champion, Hazel Hotchkiss Wightman, did not participate in this edition and therefore no challenge round was played.

## Draw

### Finals

| Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Finals | Finals | Finals |
| - | - | - | - | - | - | - | - | - | - |
| Mary Browne | 6 | 6 | | | | | | | |
| Marian Fenno | 0 | 4 | | | | | | | |
| Marian Fenno | 0 | 4 | Mary Browne | 6 | 3 | 9 | | | |
| | | | Adelaide Browning | 4 | 6 | 7 | | | |
| Adelaide Browning | 6 | 10 | Adelaide Browning | 4 | 6 | 7 | | | |
| Augusta Schmitz | 1 | 8 | | | | | | | |
| Augusta Schmitz | 1 | 8 | | | | | Mary Browne | 6 | 6 |
| | | | | | | | Eleonora Sears | 4 | 2 |
| Eleonora Sears | 6 | 6 | | | | | | | | Eleonora Sears | 4 | 2 |
| Helen Alexander | 2 | 2 | | | | | | | |
| Helen Alexander | 2 | 2 | Eleonora Sears | 5 | 6 | 6 | | | |
| | | | Mary Merrick | 7 | 0 | 2 | | | |
| Effie Wheeler | | | Mary Merrick | 7 | 0 | 2 | | | |
| Mary Merrick | w/o | | | | | | | | |
