2004–05 Seattle SuperSonics season

[1] After losing their season opener to the Los Angeles Clippers 114–84 on November 3, the Sonics went on a nine-game winning streak as they won 17 of their first 20 games.

Despite losing eight of their final ten games, the Sonics finished first place in the Northwest Division with a solid 52–30 record, marking their first 50-plus win season since 1998, and first playoff appearance since 2002.

In the first round of the playoffs, the Sonics defeated the Sacramento Kings in five games, but would lose in the second round to the eventual NBA champion San Antonio Spurs in six games.

Following the season, head coach Nate McMillan left for the Portland Trail Blazers,[2] and Antonio Daniels signed as a free agent with the Washington Wizards.

For the season, they added new yellow alternate road uniforms they remained in used until 2008.