2008 WTA Tour Championships – Singles
| Singles | |
|---|---|
| 2008 WTA Tour Championships | |
| Champion | Venus Williams |
| Runner-up | Vera Zvonareva |
| Score | 6–7(5–7), 6–0, 6–2 |
| Draw | 8 (RR + elimination) |
| Seeds | 8 |
Venus Williams defeated Vera Zvonareva in the final, 6–7(5–7), 6–0, 6–2 to win the singles tennis title at the 2008 WTA Tour Championships. It was her first Tour Finals title. Williams was the third player in the Open Era (after Steffi Graf and her sister Serena Williams) to defeat the top-three ranked players at the same event: defeating world No. 2 Dinara Safina and No. 3 Serena in the round-robin stage, and No. 1 Jelena Janković in the semifinals.
Justine Henin was the two-time reigning champion, but retired from the sport in May 2008.
Safina and Agnieszka Radwańska (as an alternate) made their tournament debuts.