Kenneth James William Mackay, 3rd Earl of Inchcape (27 December 1917 – 17 March 1994), was a businessman and an earl in the Peerage of the United Kingdom. He became Earl of Inchcape on 21 June 1939 after the death of his father, Kenneth Mackay, 2nd Earl of Inchcape. During the Second World War, he gained the rank of Lieutenant with the 12th Royal Lancers and Major with the 27th Lancers.