Piazza (surname)
Piazza is an Italian surname. Notable people with the surname include:
- Adeodato Giovanni Piazza, Italian Cardinal of the Roman Catholic Church
- Alberto Piazza, Italian human geneticist
- Antonio Piazza, Italian screenwriter and director
- Callisto Piazza, Italian painter
- Cathleen Piazza, medical researcher at the University of Nebraska
- Honey Piazza, American piano player
- Ignatius Piazza, founder and director of the Front Sight Firearms Training Institute
- Luigi Piazza, Italian operatic baritone
- Marguerite Piazza, American soprano and entertainer
- Maria Piazza, Italian mineralogist and educator
- Marzia Piazza, Venezuelan beauty pageant titleholder
- Michael S. Piazza, American author and social justice advocate
- Mike Piazza, American Major League Baseball catcher
- Osvaldo Piazza, Argentine football defender and manager
- Roberto Dipiazza, Italian mayor of Trieste
- Rod Piazza, American blues harmonica player and singer
- Tim Piazza, American student killed in college fraternity hazing incident
- Valeria Piazza, Peruvian social communicator, model, and beauty pageant titleholder
- Vincent Piazza, American actor
- Wilson da Silva Piazza, Brazilian football player