Tomás is a Spanish, Portuguese, or Irish surname, equivalent of Thomas.

It may refer to:

• Antonio Tomás (born 1985), professional Spanish footballer
• Belarmino Tomás (1892–1950), Asturian trade unionist and socialist politician
• Fray Tomás de Berlanga (1487–1551), fourth bishop of Panama
• Joan Tomás Campasol (born 1985), Spanish footballer
• João Tomás (born 1975), Portuguese footballer
• José Tomás Boves (1782–1814), Spanish military leader in the Venezuelan war of Independence
• José Tomás Ovalle (circa 1788–1831), Chilean political figure
• José Tomás Sánchez (1920–2012), Roman Catholic archbishop and Cardinal Priest
• José Tomás (1934–2001), Spanish classical guitarist and teacher
• Juan Tomás Ávila Laurel (born 1966), Annobonese writer
• Juan Tomás de Rocaberti (circa 1624–1699), Spanish theologian
• Raúl de Tomás (born 1994), Spanish football player