Zanin is a surname. Notable people with the surname include:
Bruno Zanin (born 1951), Italian actor and writer Cristiano Zanin (born 1976), Brazilian lawyer Mario Zanin (bishop) (1890–1958), papal diplomat Mario Zanin (cyclist) (born 1940), Italian cyclist Santo Zanin (born 1943), Brazilian footballer Valentin Zanin (born 1937), Soviet rower
See also 21301 Zanin, a main-belt minor planet Zanini, a surname