Sir Henry Morton Llewellyn, 3rd Baronet, CBE, JP, DL (18 July 1911 – 15 November 1999) was a British equestrian champion.

Llewellyn achieved some success as a show-jumping champion during the 1930s, and competed in the Grand National steeplechase, coming second in 1936.

During World War II Llewellyn saw action in Italy and after D Day in Normandy and served as a liaison officer to Field Marshal Montgomery, eventually rising to the rank of lieutenant colonel in the British Army.

They captured the public imagination for their role in winning Great Britain's only gold medal at the 1952 Summer Olympics, in the team jumping equestrian event.

[2] His business activities, following the nationalisation of the coal industry in 1947, included interests in brewing and television.