Lough Derg is the name of two lakes in Ireland:

• Lough Derg (Shannon) a large lake on the River Shannon, bordering counties Clare, Galway and Tipperary
• Lough Derg, County Donegal a small lake, a place of Christian pilgrimage

• Lough Derg Way, a long-distance trail in Ireland

This disambiguation page lists articles about distinct geographical locations with the same name.
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