Wallack is a surname, and may refer to:
Franz Wallack (1887–1966), Austrian civil engineer. James William Wallack (c. 1794–1864), English-American actor John Lester Wallack (1820–1888), American actor, son of James W. Henry John Wallack (1790–1870), British actor and stage manager Melisa Wallack, American screenwriter and film director Susan Wallack (née Johnston) (1793-1851), English-American actress
See also Wallack's Theatre, name of several New York theatres Wallach (disambiguation) Wallachia (disambiguation) Oláh (disambiguation) Volokh (disambiguation), an alternate spelling (East Slavic)