Master Oats (14 May 1986 – 21 May 2012) was a British Thoroughbred racehorse. A specialist steeplechaser, he ran twenty-one time and won ten races. He was campaigned mainly at distances in excess of three miles and was particularly effective on soft or heavy ground. Over a period of sixteen months between November 1993 and March 1995 Master Oats won nine of his eleven races and improved from racing in minor handicaps to become the highest-rated staying chaser in Britain.