Alastair Seeley (born 4 October 1979 in Carrickfergus) is a motorcycle road racer. During 2021, he competed in Northern Ireland, winning the Ulster Superbike and Supersport Championships. At the close of North West 200 racing on 14 May 2022, Seeley had won 27 road races in the series. During 2017, he competed in the inaugural British GP2 category within the British Supersport National Championship riding a Spirit motorcycle having a Triumph 675 engine.