Archibald David Kennedy, 7th Marquess of Ailsa, OBE, DL (3 December 1925 – 7 April 1994) was a Scottish peer, the son of Angus Kennedy, 6th Marquess of Ailsa.
In early life, as David Kennedy, he worked as a steam locomotive fireman and, as Marquess, ran the Isle of Man Railway as lessee for the 1967–1971 seasons.He married Mary Burn (d.
17 August 2007, Edinburgh) on 7 April 1954 and they had three children:
Lady Elizabeth Helen Kennedy (b.
23 February 1955)
Archibald Angus Charles Kennedy, 8th Marquess of Ailsa (13 September 1956 – 15 January 2015)
David Thomas Kennedy, 9th Marquess of Ailsa (b.