2013 WTA Tour Championships – Singles

Defending champion Serena Williams defeated Li Na in the final, 2–6, 6–3, 6–0 to win the singles tennis title at the 2013 WTA Tour Championships. It was her record 11th title of the season, and her fourth Tour Finals singles title.

Players
• # 🇺🇸 Serena Williams (champion)

• # 🇧🇾 Victoria Azarenka (round robin)

• # 🇵🇱 Agnieszka Radwańska (round robin)

• # 🇨🇳 Li Na (final)

• # 🇨🇿 Petra Kvitová (semifinals)

• # 🇮🇹 Sara Errani (round robin)

• # 🇷🇸 Jelena Janković (semifinals)

• # 🇩🇪 Angelique Kerber (round robin) Notes:
 * 🇷🇺 Maria Sharapova had qualified but withdrew due to a right shoulder injury

Alternates
• # Caroline Wozniacki (Not used)

• # 🇺🇸 Sloane Stephens (Not used)