Trewern is a village in Powys, Wales.

Trewern may also refer to:

• Trewern Hall or Trewern Farmhouse, a country house in Montgomeryshire, Wales
• Trewern House, one of the Grade II* listed buildings in Powys, Wales
• Trewern Mansion, in the village Llanddewi Velfrey, Pembrokeshire, Wales

• E. P. Trewern (1895-1959), architect
• Trewen, a hamlet and a civil parish in east Cornwall, England

This disambiguation page lists articles associated with the title Trewern.
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