Ralph Underwager (28 July 1929 – 29 November 2003) was an American minister and psychologist who rose to prominence as a defense witness for adults accused of child sexual abuse in the 1980s and 1990s. Until his death in 2003, he was the director of the Institute for Psychological Therapies, which he founded in 1974. He was also a founder of Victims of Child Abuse Laws (VOCAL), a lobby group which represented the interests of parents whose children had been removed from their care by social services over abuse allegations, and he was a founding member of the False Memory Syndrome Foundation.