The 1978 Virginia Slims Championships were the seventh WTA Tour Championships, the annual tennis tournament for the best female tennis players in singles on the 1978 WTA Tour. The singles event consisted of two round robin groups (Gold and Orange) of four players each. The winners of each group played each other in the final and additionally there was a play-off match for third place. The tournament was held from March 29 to April 2, 1978, in the Oakland Coliseum Arena in Oakland, United States. Martina Navratilova won the singles event and the accompanying $50,000 first prize money.