Llandyrnog United F.C. is a football team that was founded in 1975 in Llandyrnog, near Denbigh, Wales. Llandyrnog play in the North Wales Coast East Football League Premier Division which is in the fourth level of the Welsh football league system. They stayed in the Cymru Alliance until the end of the 2008–09 season where they finished bottom of the table 20 points from safety.