William Manning

William Manning may refer to:
 * William Manning (author) (1747–1814), New England farmer, foot soldier and author of The Key of Libberty
 * William Manning (Unitarian) (c. 1630–1711), English ejected minister and Unitarian writer
 * William Manning (British politician) (1763–1835), British merchant and politician
 * William Montagu Manning (1811–1895), Australian politician
 * William Patrick Manning (1845–1915), Australian politician
 * Sir William Manning (colonial administrator) (1863–1932), British soldier and colonial administrator
 * William T. Manning (1866–1949), American Episcopal bishop
 * William Manning (bishop) (fl. 1945–1984), Anglican bishop in Africa
 * William Oke Manning (1879–1958), British aerospace engineer
 * William Manning (Australian politician) (1903–1986), member of the Legislative Assembly of Western Australia
 * Bill Manning, American sports executive, currently the President of Toronto FC and the Toronto Argonauts