The 1988–89 Segunda División B season was the 12th since its establishment. The first matches of the season were played on 3 September 1988, and the season ended in 25 June 1989.
الدوري الإسباني الدرجة الثانية بي 1988–89 (بالإسبانية: Segunda División B de España 1988-89) هو موسم من الدوري الإسباني الدرجة الثانية بي. فاز فيه أتلتيكو مدريد ب. (ar)
The 1988–89 Segunda División B season was the 12th since its establishment. The first matches of the season were played on 3 September 1988, and the season ended in 25 June 1989. (en)
La temporada 1988–89 de la Segunda División B de España de fútbol corresponde a la 12.ª edición del campeonato y se disputó entre el 3 de septiembre de 1988 y el 25 de junio de 1989. (es)
L'edizione 1988-89 della Segunda División B fu il dodicesimo campionato di calcio spagnolo di terza divisione ad avere questa denominazione. Il campionato vide la partecipazione di 80 squadre raggruppate in quattro gruppi. Le prime di ogni gruppo furono promosse in Segunda División mentre le ultime quattro e la peggiore quintultima furono retrocesse in Tercera División. (it)