Colwyn may refer to:
Wales Colwyn Bay – town in north Wales Colwyn (district) – former district and borough in north Wales Old Colwyn (formerly called Colwyn) – village in north Wales Aberconwy and Colwyn, now Conwy County Borough – county borough in Wales Afon Colwyn (River Colwyn) – river in north Wales Rhos Bay (also known as Colwyn Bay) – Bay in north Wales Colwyn Castle – castle in north Wales Colwyn (electoral ward) – electoral district in north Wales Colwyn Rural District – former rural district in mid Wales
Outside Wales Baron Colwyn – peerage title in the United Kingdom Colwyn committee – Northern Ireland committee Colwyn, Pennsylvania – borough in Pennsylvania, United States