Sir Kenneth Smith Mackenzie, 6th Baronet (25 May 1832 - 9 February 1900) was a British diplomat, landowner and Lord Lieutenant of Ross and Cromarty 1881-1899.
He entered the diplomatic service, and was appointed an attaché at Washington in 1854.
He was appointed Lord Lieutenant of Ross-shire in 1881, and continued when that office was replaced by the Lord Lieutenant of Ross and Cromarty in 1891 through the operation of the Local Government (Scotland) Act 1889.
He served on the Napier Commission on the Condition of the Crofters and Cottars in the Highlands and Islands of Scotland in 1883 and 1884.
[1] Mackenzie died at his residence Conan House, Ross-shire on 9 February 1900.