Sir Henry Morton Llewellyn, 3rd Baronet, CBE, JP, DL, was a distinguished British equestrian champion and an Olympic Gold medalist (1952 Summer Olympics in Helsinki).

Llewellyn rose to prominence as a show-jumping champion in the 1930s, achieving notable success and finishing second in the 1936 Grand National steeplechase. In 1939, he joined the Army and served with distinction during World War II, acting as a liaison officer to Field Marshal Montgomery in Italy and Normandy. He eventually rose to the rank of lieutenant colonel.

After the war, Llewellyn focused on show jumping with his horse Foxhunter, beginning in 1947. The pair represented Great Britain at the 1948 Summer Olympics, winning a bronze medal in the team event. They captured public imagination by securing Great Britain's only gold medal at the 1952 Summer Olympics in the team jumping event.

Throughout their career, Llewellyn and Foxhunter won 78 international competitions. Llewellyn also played a significant role in the administration of British show jumping and was knighted in 1977. Following their Olympic success, he founded a chain of cafes named Foxhunter.

After Sir Harry's death, his ashes were scattered near Foxhunter's grave and memorial on Blorenge Mountain above Abergavenny.