Coastal (foaled 1976 at Claiborne Farm in Kentucky) was an American Thoroughbred racehorse. He was sired by U.S. Racing Hall of Fame inductee Majestic Prince out of the mare Alluvial, who was in turn was sired by U.S. Racing Hall of Fame stallion Buckpasser. He was a half-brother, through Alluvial, to Slew o' Gold. He ran second to Affirmed in the Woodward Stakes and third in the Marlboro Cup Invitational Handicap behind Spectacular Bid and General Assembly. Then, in the Grade I Jockey Club Gold Cup, in a stretch battle with rivals Spectacular Bid and Affirmed, he again placed third.