Ai Sugiyama Women's doubles: 10 finals (3 titles, 7 runner-ups) Women's doubles: 10 finals (3 titles, 7 runner-ups)

| Outcome | Year_ | Championship | Surface | Partner | Opponents_in_the_final | Score_in_the_final |
|---|---|---|---|---|---|---|
| Runner-up | 2007 | French Open (2) | Clay | Katarina Srebotnik | Alicia Molik Mara Santangelo | 7–6, 6–4 |
| Runner-up | 2007 | Wimbledon (4) | Grass | Katarina Srebotnik | Cara Black Liezel Huber | 3–6, 6–3, 6–2 |
| Runner-up | 2009 | Australian Open | Hard | Daniela Hantuchová | Serena Williams Venus Williams | 6–3, 6–3 |