Penmaenpool (Welsh: Llynpenmaen) is a hamlet on the south side of the estuary of the River Mawddach in Wales, near Dolgellau.

[4] The George III Inn was originally two buildings: a ship chandler serving the boatbuilding industry, and a pub.

Gerard Manley Hopkins reputedly wrote the poem entitled "Penmaen Pool" in the visitor's book.

[8] Fifteen people, including four children, drowned on 22 July 1966 when the ferry Prince of Wales hit the toll bridge.

A memorial was held by the signal box on the 50th anniversary of the disaster in 2016, and a plaque was unveiled commemorating the victims.