Ai Sugiyama Singles runner-ups (7) Singles runner-ups (7)

| Date_ | Tournament | Surface | Opponent_in_the_Final | Score |
|---|---|---|---|---|
| July 26, 1994 | Surabaya , Indonesia | Hard | Elena Wagner | 2–6, 6–0, ret. |
| November 5, 1995 | Oakland , United States | Carpet (I) | Magdalena Maleeva | 6–3, 6–4 |
| January 5, 1997 | Gold Coast , Australia | Hard | Elena Likhovtseva | 3–6, 7–6(7), 6–3 |
| November 2, 1997 | Moscow, Russia | Carpet (I) | Jana Novotná | 6–3, 6–4 |
| October 5, 1999 | AIG Japan Open | Hard | Amy Frazier | 6–2, 6–2 |
| August 17, 2005 | Acura Classic | Hard | Mary Pierce | 6–0, 6–3 |
| October 1, 2006 | Seoul | Hard | Eleni Daniilidou | 6–3 2–6 7–6 |