List of Philippine Basketball Association seasons

This is a list of Philippine Basketball Association seasons.

List of seasons
Each season is composed of 2 or more conferences; in the PBA where teams are owned by corporations and do not reside in a geographical area, "conferences" are tournaments held during a season.

Winning a conference is considered a greater honor than having the best record in the season; the most prestigious conference is the All-Filipino Cup. If a team wins all three conferences in a single season from 1975 to 2003 and since 2010, winning three consecutive championships, the team is said to have won the "Grand Slam" and is a greatest honor a team can achieve in a single season. Four teams in five different seasons have completed this achievement. During 2004–2010, when the league shifted into a two-conference format, three consecutive championships contribute into a Grand Slam. However, this feat was not accomplished.