Alexander Black may refer to:
Alexander Black (theologian) (1789–1864), theologian and Free Church of Scotland minister Alexander Black (architect) (1790–1858), Scottish architect based in Edinburgh Alexander Black (surveyor) (1827–1897), Scottish-born surveyor in Victoria, Australia Alexander Black (Canadian politician) (1832–1913), political figure in Manitoba Alexander Black (photographer) (1859–1940), American author and inventor of the pre-cinema “Picture Play” Alexander William Black (1859–1906), Liberal Party politician in Scotland Alexander Black (footballer), Scottish forward with FC Barcelona 1900–1901 Alexander Black (actor) (Omar Elba, born 1983), American film actor