Zonca is a surname. Notable people with it are:
- Christine GZ (Christine Giampaoli Zonca; born 1993), Italian-Spanish rally and off-road race driver
- Craig Zonca (born 1984), Australian radio and television presenter
- Erick Zonca (born 1956), French film director and screenwriter
- Vittorio Zonca (1568–1603), Italian engineer and writer