| 2006 WTA Tour Championships | |
|---|---|
| Date | 7–12 November |
| Edition | 36th |
| Category | Year-end championships |
| Draw | 8S (round robin) / 4D |
| Prize money | $3,000,000 |
| Surface | Hard/indoor |
| Location | Madrid, Spain |
| Venue | Madrid Arena |
| Champions | |
| Singles | |
 Justine Henin-Hardenne | |
| Doubles | |
 Lisa Raymond /  Samantha Stosur | |
The 2006 WTA Tour Championships, also known as the Sony Ericsson Championships, was a women's round robin tennis tournament played on indoor hard courts at the Madrid Arena in Madrid, Spain. It was the 36th edition of the year-end singles championships, the 31st edition of the year-end doubles championships, and was part of the 2006 WTA Tour. The tournament was held between 7 November and 12 November 2006. Fourth-seeded Justine Henin-Hardenne won the singles event and earned $1,000,000 first-prize money as well as 525 ranking points. With her victory Henin-Hardenne secured her year-end No.1 ranking.[1][2][3]
