Pieretti is an Italian surname. Notable people with the surname include:
Alfredo Wiechers Pieretti (1881–1964), Puerto Rican architect Marcelo Pieretti (born 1970), Argentine rower Marino Pieretti (1920–1981), Italian-born American baseball player
Other uses Industria Cartaria Pieretti, an Italian company that produces cardboard for industrial use
See also
Pierotti (disambiguation)