Theuns is a short form used in South Africa of the Dutch masculine given name Theunis, which like Teunis, it is a derivative of Anthonius ( Anthony). Both Theunis and Theuns also exist as a patronymic surname. Notable people with this name include the following:

• Theuns Eloff (born 1955), South African administrator
• Theuns Fraser (born 1951), South African lawn bowler
• Theuns Jordaan (born 1971), South African singer and songwriter
• Theuns Kotzé (born 1987), Namibian rugby player
• Theuns Stofberg (1955–2023), South Africa rugby player

• Theuns Botha nickname for Theunis Louis Botha, South African politician

• Edward Theuns (born 1991), Belgian cyclist
• Jan Theuns (1877–1961), Dutch painter

• All pages with titles beginning with Theuns
• All pages with titles containing Theuns
• Theun de Vries (1907 – 2005), Dutch writer and poet
• Theunis
• Theus (surname)