1791 in Wales

Centuries:	16th; 17th; 18th; 19th; 20th;
Decades:	1770s; 1780s; 1790s; 1800s; 1810s;
See also:	List of years in Wales; Timeline of Welsh history 1791 in Great Britain Scotland Elsewhere

This article is about the particular significance of the year 1791 to Wales and its people.

Incumbents

June - William Jones distributes copies of an address at the Llanrwst eisteddfod, titled To all Indigenous Cambro-Britons, calling on poor Welsh farmers to set up a colony in the United States.
Richard Phillips builds Clyne Castle.
Peter Williams is excommunicated by the Methodists for publishing Sabellian heresy.
Probable date of completion of Methodist chapel at Earlswood, Monmouthshire.
Thomas Jones becomes High Sheriff of Radnorshire.

Joshua Thomas - New translation of the Baptist "Confession of Faith" issued by the London Assembly of 1689
John Williams - An enquiry into the truth of the tradition concerning the discovery of America by Prince Madog ab Owen Gwynedd, about the year 1170
Peter Williams Llythyr at Hen Gydymaith