Tomaso is a given name, being an Italian form of the name Thomas, a variant of the more common Tommaso or Tomasso. Notable people with the name include:

• Tomaso Albinoni (1671–1751), 18th-century Italian composer
• Alejandro de Tomaso (1928–2003), racing driver and businessman from Argentina
• Rico Tomaso (1898–1985), American illustrator and painter

• De Tomaso, Italian car-manufacturing company