Seán Treacy (1895–1920) was an Irish Republican Army leader during the Irish War of Independence.

Seán Treacy may also refer to:

• Seán Treacy (politician) (1923–2018), former Irish politician
• Seán Treacy (Galway hurler) (born 1965), Irish retired hurler
• Seán Treacy (Dublin hurler) (born 1995), Irish hurler

See also[edit]

• Sean Tracey (born 1980), American baseball player
• Sean Tracy (born 1963), New Zealand cricketer