Patrick Sarsfield "Paddy" Donegan (29 October 1923 – 26 November 2000) was an Irish Fine Gael politician.He was educated at a Christian Brothers School in Drogheda, County Louth and at the Vincentian Castleknock College, County Dublin. Donegan was first elected as a Fine Gael Teachta Dála (TD) for the Louth constituency at the 1954 general election. He lost his seat at the 1957 general election but was elected to Seanad Éireann by the Agricultural Panel.