Mackintosh MacKay (1793 – 1873) was a Scottish minister and author who served as Moderator of the General Assembly of the Free Church of Scotland in 1849.

At Laggan Manse William Forbes Skene, Historiographer-Royal for Scotland, then aged 19, studied Gaelic under MacKay's tuition.

He was subsequently presented by George William, Duke of Argyll, August 1831 and translated and admitted to Dunoon on 19 April 1832.

[6] At the Disruption in 1843 he gave up one of the best livings in the Church of Scotland and joined the Dissenting party.

A secondary memorial exists to MacKay in Grange Cemetery reasserting his burial in Duddingston.

"It being Sunday, he favoured us [at Abbotsford] with an excellent discourse on the Socinian controversy, which I wish my friend Mr Laidlaw had heard.

"[4] On the 22 February 1828 he married Frances (d. 23 March 1877), daughter of Francis Burton, Edinburgh.