The 2008 Big 12 Conference women's basketball championship, known for sponsorship reasons as the 2008 Phillips 66 Big 12 Women's Basketball Championship, is the 2008 edition of the Big 12 Conference's championship tournament. The tournament was held at the Municipal Auditorium in Kansas City, Missouri between March 11–13 and on March 15, 2008. Texas A&M University won their first Big 12 Conference women's basketball tournament championship beating Oklahoma State University, 64–59.
Kansas City-based Metro Sports televised the first round of the tournament while Fox Sports Net televised the second, semifinal, and final round of the tournament.