Lowdermilk is a surname. Notable people with the surname include:
Bree Lowdermilk, American musical theater composer Dwayne Lowdermilk (born 1958), Canadian ice hockey player Grover Lowdermilk (1885–1968), American baseball player Johnny Lowdermilk (born 1992), American football player Kirk Lowdermilk (born 1963), American football player Lou Lowdermilk (1887–1975), American baseball player Susan Lowdermilk (born 1963), American artist and educator Walter C. Lowdermilk (1888–1974), American soil conservationist William Harrison Lowdermilk (1839–1897), American soldier
See also Loudermilk (disambiguation)