1888 U.S. National Championships – Women's singles
# 1888 U.S. National Championships – Women's singles

Bertha Townsend defeated Marion Wright 6–2, 6–2 in the All Comers' Final of the 1888 U.S. Women's National Singles tennis championship. Bertha Townsend defeated reigning champion Ellen Hansell 6–3, 6–5 in the Challenge Round. 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 | 6 | 6 | |
| Ellen Hansell | Ellen Hansell | 3 | 5 | |

### All Comers' finals

| First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semi-finals | Semi-finals | Semi-finals | Semi-finals | Semi-finals | Final | Final | Final | Final |
| - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Bertha Townsend | Bertha Townsend | 6 | 6 | | | | | | | | | | | | | | |
| Helen Day Harris | Helen Day Harris | 4 | 0 | Bertha Townsend | Bertha Townsend | | | | | | | | | | | | |
| | | | | bye | bye | | | | | | | | | | | | |
| | | | | | | | | | Bertha Townsend | Bertha Townsend | 1 | 6 | 6 | | | | |
| Adeline Robinson | Adeline Robinson | 6 | 6 | | | | | | Adeline Robinson | Adeline Robinson | 6 | 5 | 3 | | | | |
| Augusta Roberts | Augusta Roberts | 3 | 4 | Adeline Robinson | Adeline Robinson | 6 | 3 | 6 | | | | | | | | | |
| Ellie Roosevelt | Ellie Roosevelt | 6 | 6 | Ellen Roosevelt | Ellen Roosevelt | 4 | 6 | 3 | | | | | | | | | |
| Sybil Johnson | Sybil Johnson | 3 | 0 | | | | | | | | | | | Bertha Townsend | Bertha Townsend | 6 | 6 |
| | | | | | | | | | | | | | | Marion Wright | Marion Wright | 2 | 2 |
| | | | | | | | | | bye | bye | | | | | | | |
| | | | | | | | | | Marion Wright | Marion Wright | | | | | | | |
| | | | | Violet Ward | Violet Ward | 0 | 5 | | | | | | | | | | |
| Marion Wright | Marion Wright | 6 | 6 | Marion Wright | Marion Wright | 6 | 6 | | | | | | | | | | |
| Grace Roosevelt | Grace Roosevelt | 2 | 3 | | | | | | | | | | | | | | |
