1926 U.S. National Championships – Women's singles
# 1926 U.S. National Championships – Women's singles

Forty-two-year-old Molla Mallory defeated Elizabeth Ryan 4–6, 6–4, 9–7 in the final to win the women's singles tennis title at the 1926 U.S. National Championships. The event was held at the West Side Tennis Club, Forest Hills, New York City. Mallory became the oldest US Open champion in history. It was Mallory's eighth and final U.S. National singles title.

## Draw

### Final eight

| Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Finals | Finals | Finals | Finals |
| - | - | - | - | - | - | - | - | - | - | - |
| Elizabeth Ryan | 3 | 6 | 6 | | | | | | | |
| Eleanor Goss | 6 | 4 | 0 | | | | | | | |
| Eleanor Goss | 6 | 4 | 0 | Elizabeth Ryan | 6 | 6 | | | | |
| | | | | Mary Browne | 1 | 3 | | | | |
| Mary Browne | 7 | 6 | | Mary Browne | 1 | 3 | | | | |
| Penelope Anderson | 5 | 1 | | | | | | | | |
| Penelope Anderson | 5 | 1 | | | | | Elizabeth Ryan | 6 | 4 | 7 |
| | | | | | | | Molla Mallory | 4 | 6 | 9 |
| Margaret Blake | 4 | 2 | | | | | | | | | Molla Mallory | 4 | 6 | 9 |
| Martha Bayard | 6 | 6 | | | | | | | | |
| Martha Bayard | 6 | 6 | | Martha Bayard | 3 | 3 | | | | |
| | | | | Molla Mallory | 6 | 6 | | | | |
| Molla Mallory | 7 | 6 | | Molla Mallory | 6 | 6 | | | | |
| Charlotte Chapin | 5 | 0 | | | | | | | | |
