Thaer is a surname and masculine given name of Arabic origin. Notable people with the name include:
Given name Thaer Alhasnawi (born 1973), Iraqi television presenter Thaer Krouma (born 1990), Syrian footballer Thaer Thabet, Iraqi activist
Surname Albrecht Thaer (1752–1828), German agronomist Albrecht von Thaer (1868–1957), Prussian general Lewis Von Thaer (born 1961), American business executive
See also Thayer (name)