Gortnacart Glebe is a townland located in the Barony of Banagh, within the Civil Parish of Killybegs Lower and the Electoral Division of Ardara, County Donegal. Its Irish name is Gort na Ceárta.

It spans an area of 2,754,277 square metres, which equates to approximately 1.06 square miles or 680 acres.

Gortnacart Glebe shares its borders with the following townlands:

• Coraness Glebe to the north.

• Kilrean Lower to the north.

• Carrickatlive Glebe to the south.

• Doochill North, Doochill South, Garvegort Glebe, and Snugborough to the west.

• Strawoaghter Glebe to the east.