Thomas Hackett may refer to:
Thomas Hackett (Jacobite), Irish Jacobite official and merchant Thomas C. Hackett (c. 1798–1851), American politician and lawyer Thomas Hackett (British politician) (1869–1950), British co-operative activist and politician Thomas Bernard Hackett (1836–1880), Irish recipient of the Victoria Cross See also Tom Hackett (born 1992), Australian player of American football