Llanwenog is a village and community in Ceredigion, Wales. In 2011 the population of Llanwenog was 1,364, of whom 57.0% were able to speak Welsh. The community includes the villages of Alltyblacca, Gorsgoch, Cwmsychbant, Cwrtnewydd, Highmead, Aber, Drefach and Rhuddlan.