1889 U.S. National Championships – Women's singles
# 1889 U.S. National Championships – Women's singles

Bertha Townsend defended her tennis singles title by defeating Lida Voorhees 7–5, 6–2 in the Challenge Round of the 1889 U.S. Women's National Singles Championship. Voorhuis had won the right to challenge Townsend by defeating Helen Day Harris 6–5, 2–6, 6–3 in the final of the All Comers' competition. The event was held at the Philadelphia Cricket Club, Pennsylvania.

## Draw

### Challenge round

| Challenge Round | Challenge Round | Challenge Round | Challenge Round | Challenge Round |
| - | - | - | - | - |
| Bertha Townsend | Bertha Townsend | 7 | 6 | |
| Lida Voorhees | Lida Voorhees | 5 | 2 | |

### All Comers' finals

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Finals | Finals | Finals | Finals | Finals |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Lida Voorhees | Lida Voorhees | 6 | 6 | | | | | | | | | | |
| Laura Knight | Laura Knight | 1 | 2 | | | | | | | | | | |
| Laura Knight | Laura Knight | 1 | 2 | Lida Voorhees | Lida Voorhees | 6 | 4 | 6 | | | | | |
| | | | | Grace Roosevelt | Grace Roosevelt | 1 | 6 | 5 | | | | | |
| Grace Roosevelt | Grace Roosevelt | | | Grace Roosevelt | Grace Roosevelt | 1 | 6 | 5 | | | | | |
| Marion Wright | Marion Wright | | | | | | | | | | | | |
| Marion Wright | Marion Wright | | | | | | | | Lida Voorhees | Lida Voorhees | 6 | 2 | 6 |
| | | | | | | | | | Helen Day Harris | Helen Day Harris | 5 | 6 | 3 |
| D.F. Butterfield | D.F. Butterfield | 6 | 6 | | | | | | | | | | | Helen Day Harris | Helen Day Harris | 5 | 6 | 3 |
| Anna C. Smith | Anna C. Smith | 3 | 1 | | | | | | | | | | |
| Anna C. Smith | Anna C. Smith | 3 | 1 | D.F. Butterfield | D.F. Butterfield | 1 | 3 | | | | | | |
| | | | | Helen Day Harris | Helen Day Harris | 6 | 6 | | | | | | |
| Rebecca H. Lycett | Rebecca H. Lycett | 1 | 1 | Helen Day Harris | Helen Day Harris | 6 | 6 | | | | | | |
| Helen Day Harris | Helen Day Harris | 6 | 6 | | | | | | | | | | |
