1983–84 Primera División B de Baloncesto

The 1983–84 Primera División B was the second category of the Spanish basketball league system during the 1983–84 season

Format
14 teams played this season.


 * 14 teams in a round-robin format, the first three are promoted to the Liga ACB, the last four are relegated to Segunda División.
 * Ties are eliminated.
 * In case of tie at the end of the game, extensions will be played until one team wins.
 * Victory is worth 2 points and defeat 1

Promotion and relegation (pre-season)
A total of 14 teams contested the league, including 6 sides from the 1982–83 season, one relegated from the 1982–83 Liga Española de Baloncesto, four promoted from the Segunda División and three Wild Cards.


 * Teams relegated from Liga Española de Baloncesto
 * Obradoiro Feiraco


 * Teams promoted from Segunda División
 * Kanterbrau Dribling
 * CD Oximesa
 * CB Llíria
 * Iveco Gijón


 * Wild Cards
 * AB Premià
 * Breogán Caixa Galicia
 * CB Gasteiz


 * Teams that resigned to participate
 * CD Fortuna sold his place to Atlético de Madrid