Casarin is a surname. Notable people with this surname include:
Carlos Escobar Casarin (born 1990), Chilean footballer Davide Casarin (born 2003), Italian basketball player Paolo Casarin (born 1940), Italian former football referee Vittorio Casarin (born 1950), Italian politician from Veneto
See also
Horacio Casarín Garcilazo (1918–2005), Mexican football player and coach Casarini