The Portland Trail Blazers, commonly known as the Blazers, are a professional basketball team based in Portland, Oregon. They play in the Northwest Division of the Western Conference of the National Basketball Association (NBA). The franchise, based in Portland throughout its existence, entered the league in 1970, and is currently the only major league franchise in the state of Oregon. From 1977 through 1995, the team sold out 814 consecutive home games, the longest such streak in American professional sports. They originally played their home games in the Memorial Coliseum, before moving to the Rose Garden Arena in 1995.

The team has advanced to the NBA Finals three times, winning the NBA Championship once, in 1977. The team also advanced to the NBA Finals in 1990 and 1992. The team has qualified for the playoffs during 25 seasons of their 36-season existence, including a streak of 21 straight appearances from 1983 through 2003. Four Hall of Fame players have played for the Trail Blazers (Lenny Wilkens, Bill Walton, Clyde Drexler, and Drazen Petrovic), as well as one player (Scottie Pippen) who was recognized as one of the league's 50 greatest but who is not yet eligible for the Hall. Bill Walton is the franchise's most decorated player; he was the NBA Finals Most Valuable Player in 1977, and the regular season MVP the following year. Three Blazer rookies (Geoff Petrie, Sidney Wicks, and Brandon Roy) have won the NBA Rookie of the Year award. Two Hall of Fame coaches, Lenny Wilkens and Jack Ramsay, have patrolled the sidelines for the Blazers, and two others (Mike Schuler and Mike Dunleavy) have won the NBA Coach of the Year award with the team.

The team owner is Paul Allen, who purchased the team in 1988. The team president is Larry Miller, and the general manager is Kevin Pritchard. The head coach of the Trail Blazers is Nate McMillan. The team's NBDL affiliate is the Idaho Stampede.