Tammelin is the surname of the following people: Bertha Tammelin (1836–1915), Swedish actress Gabriel Tammelin (1641–1698), Finnish vicar and translator Lars Tammelin (1669–1733), Finnish mathematician Lars-Erik Tammelin (1923–1991), Swedish chemist Matti Tammelin (1926–1998), Finnish boxer
See also Tammelinn, neighbourhood of Tartu, Estonia