Back WTA Tour Championships 2009 Catalan WTA Tour Championships 2009 Czech WTA Tour Championships 2009 Danish WTA Championships 2009 German WTA Tour Championships 2009 Spanish Masters de tennis féminin 2009 French WTA Tour Championships 2009 Italian WTA Tour Championships 2009 Dutch Sony Ericsson Championships 2009 Polish Sony Ericsson Championships 2009 Russian
| 2009 WTA Tour Championships | |
|---|---|
 | |
| Date | October 27 – November 1 |
| Edition | 39th (singles) / 34th (doubles) |
| Location | Doha, Qatar |
| Venue | Khalifa International Tennis Complex |
| Champions | |
| Singles | |
 Serena Williams | |
| Doubles | |
 Nuria Llagostera Vives María José Martínez Sánchez | |
The 2009 WTA Tour Championships (also known as Sony Ericsson Championships – Doha 2009) was held in Doha, Qatar from October 27 to November 1. It was the second time the Khalifa International Tennis Complex hosted the WTA Tour Year-End Singles and Doubles Championships.
Women's Tennis Association(WTA) rank No. 2 Serena Williams won her second year-end championships title, defeating sister, Venus Williams in the final 6–2, 7–6(4). The Spanish duo of Nuria Llagostera Vives and María José Martínez Sánchez won the doubles event on their debut 7–6(0), 5–7, [10-7]. They defeated the World No. 1s in doubles and defending champions, Cara Black and Liezel Huber, in the final.