Brian Boru (foaled 16 March 2000) is a retired Thoroughbred racehorse and active sire who was bred in Britain but was trained in Ireland.
On his final start of the year, Brian Boru was sent to England to contest the Group One Racing Post Trophy at Doncaster on 26 October.
In the closing stages Brian Boru produced a "storming late run"[3] to take the lead and won by one and a quarter lengths from his stable companion Powerscourt.
[3] Brian Boru began his three-year-old season in the Derrinstown Stud Derby Trial at Leopardstown on 11 May in which he finished third behind Alamshar and The Great Gatsby.
In August, Brian Boru took the lead in the straight in the Great Voltigeur Stakes at York but was caught inside the final furlong and beaten a neck by Powerscourt.
[9] On his first start as a four-year-old, Brian Boru won the Listed Alleged Stakes at Leopardstown, beating Napper Tandy by three quarters of a length.
He has had little success with his flat racers but has shown promise as a National Hunt stallion, siring the useful steeplechaser Bold Sir Brian.