Keith James O'Halloran (born 10 November 1975) is an Irish former professional footballer.
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.
He then signed for Shamrock Rovers and in his two seasons scored 4 goals in 43 total appearances.