Thomaz, a variant of the given name Thomas, may refer to:

• Thomaz Bellucci (born 1987), Brazilian tennis player
• Thomaz Soares da Silva (1921–2002), Brazilian footballer known as Zizinho
• Thomaz Farkas (1924–2011), Hungarian-born Brazilian photographer and film producer
• Thomaz Koch (born 1945), Brazilian tennis player

• Alvaro Thomaz (fl. 1500–1521), Portuguese mathematician
• Andrea L. Thomaz, American robotics scientist
• Aylton Thomaz (1934–2009), Brazilian comics artist and painter
• Pablo Thomaz (born 1999), Brazilian footballer
• Raphael David Thomaz (born 1993), Brazilian footballer known as Raphinha
• Wiz Khalifa, American rapper Cameron Jibril Thomaz (born 1987)

• Thomaz (footballer), Brazilian footballer Antonio Thomaz Santos de Barros (born 1986)

• Tomás (disambiguation)