Robert Andrew Carnegie, 13th Earl of Northesk (24 June 1926 – 26 January 1994), was a British landowner, farmer and hereditary peer.

He was educated at Pangbourne Nautical College and Tabor Academy, Massachusetts.

In the 1970s he moved to the Isle of Man where he bred Charolais cattle and exported them throughout the world.

[1] On 20 July 1949, Northesk married Jean Margaret MacRae, daughter of Captain John Duncan George MacRae and Lady Phyllis Hervey, daughter of Frederick Hervey, 4th Marquess of Bristol.

He was succeeded in the earldom by his younger but only surviving son, David.