1846 in Wales

Centuries:	17th; 18th; 19th; 20th; 21st;
Decades:	1820s; 1830s; 1840s; 1850s; 1860s;
See also:	List of years in Wales; 1846 in The United Kingdom Ireland Scotland

This article is about the particular significance of the year 1846 to Wales and its people.

Incumbents

14 January - 35 men are killed in a mining accident at Risca.
March - A speech by William Williams, MP for Coventry, on the subject of education and the Welsh language leads to the commissioning of a report.
27 June - Thomas Frankland Lewis is created a baronet.
1 August - Opening of the Aberdare railway.
3 August - Mary Cornelia Edwards of Plas Machynlleth marries George Vane-Tempest, 5th Marquess of Londonderry.
October - New bridge over the River Towy at Llandeilo collapses under construction.
New cast-iron Llandinam Bridge in Montgomeryshire opened.
Rebuilt Beaumaris Pier opened.
Halkyn-born Mormon missionary Dan Jones becomes mission president of The Church of Jesus Christ of Latter-day Saints in Wales, concentrating the church's efforts around Merthyr Tydfil, publishing (from July) the Welsh language monthly Prophwyd y Jubili and also the tract Hanes Saint y Dyddiau Diweddaf.
The Cambrian Archaeological Association is founded by Harry Longueville Jones and John Williams (Ab Ithel) and launches its journal Archaeologia Cambrensis.

Griffith Edwards (Gutyn Padarn) - Gwaith Prydyddawl
Daniel Silvan Evans - Telynegion
Sir Samuel Rush Meyrick - Heraldic Visitations of Wales and Part of the Marches between the years 1586 and 1613...
William Morgan (Gwilym Gelli-deg) - Cerbyd Awen