Llantrisant is a town in the county borough of Rhondda Cynon Taff, traditional county of Glamorgan, south Wales, lying on the River Ely and the River Clun. The town is best known as the home of the Royal Mint, which manufactures all British coins.

Attractions in the town include the Mint's museum, the remains of Llantrisant Castle and a design centre . William Price lived in the town.

The town's name translates as The Parish of the Three Saints