Glyn

Glyn means "Valley" in Welsh and may refer to:


 * Glyn (name), including a list of people with the name
 * Baron Glyn, a title in the Peerage of the United Kingdom
 * Glyn baronets, created for members of the Glyn family
 * Glyn Ceiriog, a former slate mining village in Wrexham County Borough, in Wales
 * Glyn Technology School, an English boys' school in Epsom and Ewell
 * Glyn Valley Tramway, a narrow gauge railway between Chirk and Glyn Ceiriog in Denbighshire, Wales
 * Mynydd y Glyn, a mountain in South Wales, between the towns of Pontypridd and Tonyrefail
 * An electoral ward in the community of Llanelli Rural in Carmarthenshire, Wales
 * An electoral ward in the community of Colwyn Bay in Conwy, Wales