2008 WTA Tour Championships – Singles

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.

Venus became 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 respective round robin matches and No. 1 Jelena Janković in the semifinals.

Safina and Agnieszka Radwańska (as an alternate who replaced Ivanovic) made their debuts in the tournament.

Justine Henin was the two-time reigning champion, but retired from the sport in May 2008.

Seeds
• # 🇷🇸 Jelena Janković (semifinals)

• # 🇷🇺 Dinara Safina (round robin)

• # 🇺🇸 Serena Williams (round robin, withdrew due to a stomach injury)

• # 🇷🇸 Ana Ivanovic (round robin, withdrew due to a virus)

• # 🇷🇺 Elena Dementieva (semifinals)

• # 🇷🇺 Svetlana Kuznetsova (round robin)

• # 🇺🇸 Venus Williams (champion)

• # 🇷🇺 Vera Zvonareva (final)

Alternates
• # 🇵🇱 Agnieszka Radwańska (round robin, Replaced Ivanovic)

• # 🇷🇺 Nadia Petrova (round robin, Replaced S.Williams)

White group
''Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.''

Maroon group
''Standings are determined by: 1. number of wins; 2. number of matches; 3. in two-players-ties, head-to-head records; 4. in three-players-ties, percentage of sets won, or of games won; 5. steering-committee decision.''