Rival Cadeau-Payet (born 13 May 1964) is a former light middleweight boxer from Seychelles. He represented his country at the 1990 Commonwealth Games, 1992 Summer Olympics, 1994 Commonwealth Games (in which he won a bronze medal), 1995 All-Africa Games (in which he won silver) and at the 1996 Summer Olympics.
In 2024 he received a Seychelles Medal of Honour.