The 1978–79 Seattle SuperSonics season was the team's 12th since the franchise began, and their most successful, winning their only NBA title. In the playoffs, the SuperSonics defeated the Los Angeles Lakers in five games in the Semi-finals, then defeated the Phoenix Suns in seven games in the Conference Finals to reach the NBA Finals for a second consecutive season in a rematch of the 1978 NBA Finals, facing the defending NBA champion Washington Bullets whom they had lost to in seven games. The Sonics would go on to avenge their NBA Finals loss and defeat the Bullets in five games, winning their first and only NBA championship. Dennis Johnson was named the NBA Finals MVP. They wouldn't reach another NBA Finals Until 1996 in which they were led by Gary Payton and Shawn Kemp. This was Seattle's first professional sports championship since the Seattle Metropolitans victory in the Stanley Cup in 1917.

Draft picks

Roster

Regular season

Season standings

Record vs. opponents

Game log

Playoffs

The SuperSonics had a first round bye, then defeated the Los Angeles Lakers in the Western Conference Semi-finals, the Phoenix Suns in the Western Conference Finals, and the Washington Bullets in the NBA Finals. Dennis Johnson of the SuperSonics was the Most Valuable Player of the Finals while teammate Gus Williams was the leading scorer, averaging 28.6 points per game.

Game log

Awards and records