Llanelltyd is a small village and community in Gwynedd, to the northwest of Dolgellau. The community population taken at the 2011 census was 514, 57.4% of which speak Welsh.
It is home to the 12th-century Cymer Abbey, a grade I listed building. St Illtyd's church, one of the oldest parish churches in Wales, is a grade II* listed building.
The small settlement of Bontddu is in the community. The village itself has a population of around 300.