Below is a listing of the first known reference in newspapers to cricket being played by teams starting with the letter U in various settlements in Wales during the 19th century.

Union Foundry (Mold) 1874

University College, North Wales (Bangor) 1892
Upper Carmarthenshire 1860
Upper Cwmbran 1892
Upper Machen 1857
Usk 1815
Usk Grammar School 1869
Usk Juveniles 1860
Usk Rifle Volunteers 1861
Utopians (Llandudno) 1894