Llysfaen is a village and community in Conwy County Borough overlooking the north coast of Wales, and situated on the hill Mynydd Marian.

Llysfaen is located one kilometre (0.6 miles) inland, halfway between the coastal towns of Abergele and Colwyn Bay.

To its immediate west is Mynydd Marian, a mountain known for its limestone grassland and the rare dwarf subspecies of the silver-studded blue butterfly, and Craig y Forwyn is to the east.

The council ward, including the village centre and surrounding precincts, occupies 5.11 square kilometres (1,260 acres, 511 hectares).

However, it historically formed an exclave of Caernarfonshire assumed by the surrounding Denbighshire in 1923; subsequent local government reorganisation saw it administered as part of Clwyd (1974–1996).

The village has a small number of facilities including a primary school, Ysgol Cynfran, accepting pupils from nursery age to 11; a convenience store; the mediaeval St. Cynfran's parish church (see below); the village hall; a playgroup; three parks, a small hairdressers and barbers, two telephone boxes, and two post boxes.

A majority of the teams' games are played on the village's Banana Pitch, so called because it dips heavily in the middle.