Caldas Sport Clube is a Portuguese football team based in Caldas da Rainha which was founded on 15 May 1916.
Between 1956 and 1959 Caldas participated in the Portuguese Liga, the top level of Portuguese football, but they currently play in the Campeonato de Portugal. In 2018 Caldas reached the semi-finals of Taca de Portugal, along with Desportivo das Aves, Sporting CP and FC Porto.