The 1846 Grand Liverpool Steeplechase was the eighth annual running of a Handicap Steeple-chase, later to become known as the Grand National Steeplechase Horse race which took place at Aintree Racecourse near Liverpool on Wednesday 4 March 1846 and attracted a then record field of 22 runners. It was won by the unconsidered outsider Pioneer. Veluti, ridden by Jem Mason, a rider who had previously won the race in 1839 was sent off as the 11/2 favourite to win while the top weight of 12 stone 8 lbs was given to Firefly, the mount of Larry Byrne.