1997–98 Segunda Divisão B

The 1997–98 Segunda Divisão season was the 64th season of the competition and the 48th season of recognised third-tier football in Portugal.

Overview
The league was contested by 54 teams in 3 divisions with Naval 1º Maio, AD Esposende and CD Santa Clara winning the respective divisional competitions and gaining promotion to the Liga de Honra. The overall championship was won by CD Santa Clara.