Patrick Sarsfield Donegan (29 October 1923 – 26 November 2000) was an Irish Fine Gael politician who served as Minister for Fisheries from February 1977 to July 1977, Minister for Lands from 1976 to 1977 and Minister for Defence from 1973 to 1976. He served as a Teachta Dála (TD) from 1954 to 1957 and 1961 to 1981. He also served as a Senator for the Agricultural Panel from 1957 to 1961.