Locklin is a surname. Notable people with the surname include:
Billy Ray Locklin (born 1936), American football defensive lineman Gerald Locklin, American poet Hank Locklin (1918–2009), American country music singer-songwriter Kerry Locklin (born 1959), Canadian football defensive line coach Loryn Locklin (born 1968), American actress Stu Locklin (1928–2016), American Major League Baseball outfielder