The 1951 Rugby League Lancashire Cup competition 1951 was the thirty-ninth occasion on which the Lancashire Cup completion had been held.Wigan won the trophy by beating Leigh by the score of 14-6The match was played at Station Road, Pendlebury, Salford, (historically in the county of Lancashire). The attendance was 33,230 and receipts were £5,432.This was the sixth (and last) in Wigan’s record breaking run of six consecutive Lancashire Cup victories.