Ty Gwyn ( Welsh for "White" or "Blessed House") may refer to:

• Ty Gwyn on the Taf (Ty Gwyn ar Daf), the supposed site of the legendary Welsh parliament that produced the [aws of Hywel Dda
• Whitland (Hendy-gwyn, "Old White House") in Carmarthenshire, the present settlement there
• Ty Gwyn, a former monastic community near Whitesands Bay in Pembrokeshire with ties to SS. Patrick and David
• Ty Gwyn Tower at Barmouth in Gwynedd
• Ty Gwyn at Crossways in Monmouthshire, a producer of cider
• Tygwyn railway station at Glan-y-wern in Gwynedd on the Cambrian Line
• Ty Gwyn, the former name for Clydach in Swansea
• Ty Gwyn, an estate in Penylan, Cardiff

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