Brithdir is the name of a number of locations in Wales:

Villages

• Brithdir, Carmarthenshire
• Brithdir, Ceredigion
• Brithdir, Conwy
• Brithdir, Flintshire
• Brithdir, Gwynedd
• Brithdir Mawr, Pembrokeshire also known as 'Sir Benfro
• Brithdir, Powys

Districts of Towns

• Brithdir, Caerphilly / Caerffili [City/Town/Village]
• Brithdir, Bridgend