The 1976–77 NBA season was the 31st season of the National Basketball Association. The season ended with the Portland Trail Blazers winning their first NBA Championship in franchise history, beating the Philadelphia 76ers in six games in the NBA Finals.
Prior to the season, the NBA merged with its primary rival league, the American Basketball Association (ABA). Four ABA teams joined the NBA, all four of which are still in the league today: the San Antonio Spurs, Indiana Pacers, Denver Nuggets, and New York Nets. The Nets became the New Jersey Nets the following season, and now play as the Brooklyn Nets. With these additions, the NBA expanded from eighteen teams to twenty-two.