Aquae Calidae, Latin for "hot waters", may refer to:Aquae Calidae, ancient name of Caldas de Reis, Spain Aquae Calidae, ancient name of Çiftehan, Turkey Aquae Calidae, ancient name of Vichy, France Aquae Calidae, Algeria Aquae Calidae, Bulgaria Aquae Calidae Neapolitanorum, Italy Aquae Sulis, called "Aquae Calidae" in Ptolemy's Geographia