Langner is a German surname. Notable people with the surname include:
David Langner (disambiguation), several people Gerard Langner, Polish ice hockey player Karol Langner (1843–1912), Polish priest Lawrence Langner (1890–1962), Welsh-born American playwright Paul Langner, German ice hockey player Thomas S. Langner (1924–2026), American sociologist Władysław Langner (1896—1972), Polish Army general