Siviero is an Italian surname. Notable people with this surname include:
- Enzo Siviero (born 1945), Italian architect, engineer and writer
- Gustavo Siviero (born 1969), Argentine former professional footballer
- Jorge Luis Siviero (born 1952), former Uruguayan football player and coach
- Rodolfo Siviero (1911-1983), Italian secret agent, art historian and intellectual
- Tiziano Siviero (born 1957), Italian rally co-driver