Morys George Lyndhurst Bruce, 4th Baron Aberdare, KBE, GCStJ, PC, DL (16 June 1919[1] – 23 January 2005[2]), was a Conservative politician, and from 1999 until his death, one of ninety-two elected hereditary peers in the British House of Lords.

He was the eldest son of Clarence Bruce, 3rd Baron Aberdare, and Margaret Bethune Black, and succeeded to his father's title on the latter's death in 1957.

In 1939 he joined the British Army, commissioned with the rank of lieutenant in the Welsh Guards; he would eventually reach the rank of captain, after having served in various staff positions with XII Corps, the 21st Army Group, and XXX Corps during and after World War II.

[3] Lord Aberdare was a lifelong devotee of real tennis, winning the British amateur singles championship four times between 1953 and 1957, and the amateur doubles championship four times between 1954 and 1961.

During his tenure there was a significant expansion in both real tennis and rackets, and a number of new courts were built while several others were re-opened.