Toohey is a surname. Notable people with the surname include:
John Peter Toohey (1879–1946), American writer and publicist
John Toohey (judge) (1930–2015), Australian judge and Justice of the High Court of Australia
John Toohey (politician) (1839–1903), Irish-born Australian politician and brewer
Meghan Toohey, folk-rock singer/songwriter
Peter Toohey (born 1954), Australian cricketer
Fictional characters:
Ellsworth Toohey, character in Ayn Rand's novel The Fountainhead