Lurganboy is a townland located in the Barony of Banagh, within the Civil Parish of Killybegs Lower and the Electoral Division of Ardara, County Donegal.

It spans an area of 220,390 square metres, which equates to approximately 0.09 square miles or 54 acres.

Lurganboy shares its borders with the following townlands:

• Ardara and Woodhill to the west.

• Doochill North, Monorgan Glebe, and Stormhill to the east.