Tuca is the nickname of:
- Tuca Ferretti or Ricardo Ferretti (born 1954), Brazilian-Mexican footballer and manager
- Benjamín "Tuca" Pardo, fictional character in the 2012 Argentine telenovela Graduados
- Tuca (footballer) or Juliano Francisco de Paula (born 1981), Brazilian football defender
- Tuca (musician) or Valeniza Zagni da Silva (1944–1978), Brazilian guitarist, songwriter, and singer