Manfredi "Mampe" Rizza (born 26 April 1991) is an Italian canoeist. He finished sixth in the K-1 200 metres event at the 2016 Summer Olympics. He won a silver medal in Men's K-1 200 metres, at the 2020 Summer Olympics.
He studied mechanical engineering at the University of Pavia. Rizza took up kayaking in 2000.