1721 in Wales

Centuries:	16th; 17th; 18th; 19th; 20th;
Decades:	1700s; 1710s; 1720s; 1730s; 1740s;
See also:	List of years in Wales; Timeline of Welsh history 1721 in Great Britain Scotland Elsewhere

This article is about the particular significance of the year 1721 to Wales and its people.