Sheila Manahan (1 January 1924 – 29 March 1988) was an Irish actress.
Among her film roles were Ann Willingdon in Seven Days to Noon (1950), Esther's mother in The Story of Esther Costello (1957), and Mrs. Jenkins in Only Two Can Play (1962), with Peter Sellers and Mai Zetterling. She was married to the Scottish actor, Fulton Mackay.