Keith James O'Halloran (born 10 November 1975) is an Irish former professional footballer. A right winger, O'Halloran began his career with Middlesbrough in 1994. He remained at Ayresome Park for three years, making just four league appearances. After loan spells at Scunthorpe United and Cardiff City, he joined Scottish club St Johnstone, then managed by Paul Sturrock, for a £50,000 fee. In three years at McDiarmid Park, O'Halloran made 71 appearances, netting three goals along the way.