The title of Earl of Inverness is a title of nobility in the Peerage of the United Kingdom. It was first created in 1718 in the Jacobite Peerage of Scotland, together with the titles Viscount of Innerpaphrie and Lord Cromlix and Erne, by James Francis Edward Stuart for the Honourable John Hay of Cromlix, third son of the 7th Earl of Kinnoull. He was created Duke of Inverness in 1727, but both titles became extinct upon the death of the grantee in 1740.
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The Jacobite peerage includes those peerages created by James II and VII, and the subsequent Jacobite pretenders, after James's deposition from the thrones of England, Scotland and Ireland following the Glorious Revolution of 1688. These creations were not recognised in English, Scots or Irish law, but the titles were used in Jacobite circles in Continental Europe and recognised by France, Spain and the Papacy.
Title page of The Jacobite Peerage, 1904, by Marquis of Ruvigny and Raineval