The Liga Española de Baloncesto (English: Spanish Basketball League), whose top division was known as Primera División (English: First Division), was the old basketball league in Spain, from 1957 to the 1982–83 season. It was organized by the Spanish Basketball Federation, and played by the best clubs of the country. In 1983, the clubs decided to create the Basketball Clubs Association, and transformed the top division into the new Liga ACB, although that league was also named Primera División until 1988.
The league was played in a double round-robin format without playoffs. Two points were conceded for a winning game, one for a draw, and no points for the loser. The worst teams of each season were relegated to the second division (Segunda División, called Primera División B since 1978). The winner of the league was qualified to the Euroleague.