Ynys y Fydlyn, Isle of Anglesey

• Parish/Community: Cylch-y-Garn
• Unitary Authority: Isle of Anglesey
• Region: Wales

• Category: Water Feature
• Type: Island

• Latitude/Longitude: 53°23'39"N 4°34'20"W
• Eastings/Northings: 229056, 391707
• OS Grid: SH290917
• Mapcode Local: GBR HM2Q.QBK
• Mapcode Global: WH41X.QYW5

Location and coordinates are for the approximate centre of Ynys y Fydlyn within this administrative area. Geographic features and populated places may cross administrative borders.