Thomas or Tom Hickey may refer to:

• Tom Hickey (actor) (1944–2021), Irish actor
• Tom "Bo" Hickey (born 1945), American football player who played for the Denver Broncos
• Tom Hickey (footballer, born 1901) (1901–1935), Australian rules footballer who played for Fitzroy
• Tom Hickey (footballer, born 1991), Australian rules footballer who plays for Sydney (formerly for Gold Coast, St Kilda and West Coast)
• Tom Hickey (hurler) (born 1975), Irish hurler
• Tom Hickey (politician) (1933–2020), politician in Newfoundland, Canada
• Thomas Hickey (ice hockey) (born 1989), Canadian professional ice hockey defenceman
• Thomas Hickey (painter) (1741–1824), Irish painter
• Thomas Hickey (soldier) (died 1776), executed for mutiny during the American Revolution
• Thomas J. Hickey (1930–2016), American politician in Nevada
• Thomas Francis Hickey (bishop) (1861–1940), Roman Catholic Bishop of Rochester
• Thomas Francis Hickey (general) (1898–1983), United States Army Lieutenant General
• Thomas "TJ" Hickey, Australian Aboriginal teenager whose death led to the 2004 Redfern riots