The 2008 Sony Ericsson WTA Tour was the elite professional tennis circuit organized by the Women's Tennis Association for the 2008 tennis season. The 2008 WTA Tour calendar comprises the Grand Slam to
Jelena Janković finished the year as WTA world No. 1 for the first time in her career, though Serena Williams was named the Player of the Year. Janković won four tournaments during the season, including two Tier I events, and finished runner-up at a major at the US Open. Williams won four tournaments during the season, including a major at the US Open, and two Tier I events.