The Western Conference is one of two conferences that make up the National Basketball Association (NBA), the other being the Eastern Conference. Both conferences consist of 15 teams organized into three divisions. The Western Conference comprises the Northwest, Pacific, and Southwest Divisions.

The current divisional alignment was adopted at the start of the 2004–05 season, when the now Charlotte Hornets began play as the NBA's 30th franchise. This necessitated the move of the New Orleans Pelicans (named New Orleans Hornets at the time) from the Eastern Conference's Central Division to the newly created Southwest Division of the Western Conference.

The NBA first started awarding a Western Conference championship trophy during the 2000–01 season, renaming it after Hall of Famer Oscar Robertson in the 2021–22 season. Also in 2021–22, the league began awarding the Earvin "Magic" Johnson Trophy to the Western Conference Finals Most Valuable Player, named after Hall of Famer Magic Johnson.

Notes

^Note: Milwaukee joined the Eastern Conference during the 1980–81 season.