The season 1993–94 of Segunda División B of Spanish football started August 1993 and ended May 1994.
Playoffs de Ascenso: Relegated from Segunda División: Promoted from Tercera División: Relegated: Administrative relegation: Occupied the vacant spots by administrative relegations: Teams from Asturias, Castile and Leon, Castilla–La Mancha, Galicia and Madrid.
Teams from Aragon, Basque Country, Cantabria, Castile and Leon, La Rioja and Navarre.
Teams from Andorra, Balearic Islands, Catalonia, Region of Murcia and Valencian Community
Teams from Andalusia, Canary Islands, Extremadura and Melilla.