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.

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] Justine Henin-Hardenne defeated Amélie Mauresmo, 6–4, 6–3.

Lisa Raymond / Samantha Stosur defeated Cara Black / Rennae Stubbs, 3–6, 6–3, 6–3.