Luisa Regina Cachan Muñoz (born January 21, 1979 in Aviles) is a swimmer from Spain. She has a disability where she cannot use her legs and can only use some of her arms and hands, and is an S4 type swimmer. She raced at the 1992 Summer Paralympics. She did not finish as the first, second or third swimmer. She raced at the 1996 Summer Paralympics. She did not finish as the first, second or third swimmer. She raced at the 2000 Summer Paralympics. She did not finish as the first, second or third swimmer. She raced at the 2004 Summer Paralympics. She finished second in the 4 x 50 meter 20pts Relay.