Craig-y-Don is a suburb of Llandudno, a coastal seaside resort in Conwy county borough, north Wales.

Land near Craig-y-Don was owned by the Mostyn family who built a manor house in Gloddaeth (now St David's College).

The Mostyns also built a windmill at Hen Dwr, which later became the Bodafon Mountain Beacon, used as part of a warning system in the Napoleonic Wars.

Opposite Bodafon Fields at the end of the promenade is a large paddling pool for children with a beach cafe and public facilities.

The Church in Wales parish church of St. Paul on Mostyn Broadway was built in 1893/95 as a memorial to Prince Albert Victor, Duke of Clarence on the corner of Clarence Road, which forms a junction with Mostyn Avenue.