Sir Kenneth Mackenzie, 3rd Baronet

Sir Kenneth Mackenzie, 3rd Baronet (c. 1658 – 13 September 1728) was a Scottish politician. He served as a shire commissioner for Cromartyshire in the Parliament of Scotland, and as one of the first Scottish MPs in the new Parliament of Great Britain.

The younger son of Sir George Mackenzie, 2nd Baronet, his father resigned the baronetcy to him in 1704 after being created Earl of Cromartie.

He twice represented the constituency of Cromartyshire from 1 November 1710 – 29 September 1713. He was one of the Mackenzie Baronets.