Dennis Gamsy (born 17 February 1940 in Glenwood, Natal) is a former South African cricketer (wicketkeeper) who played in two Tests against Australia in 1970. He played a few games in the next three seasons before retiring. He played for South Africa and Natal. Dennis made his first-class debut at the age of 19. He took eight catches and a stumping and established himself as Natal’s first choice. He subsequently became an active anti-apartheid campaigner.