Llandefaelog Fach, sometimes simply called 'Llandefaelog', is a small village and community located in Powys, Wales. It includes the surrounding areas of Glan Honddu, Sarnau, Pwllgloyw and Garthbrengy. These areas border the village. The nearest pubs and shops are in Brecon. Cradoc golf course is also nearby. The village has a church dedicated to . The church contains the Cross of Briamail, known as in Welsh.