List of brigades of the Irish Republican Army

This is a list of brigades of the Irish Republican Army, formed or active between 1916 and 1922, which were involved in activities undertaken by the Irish Republican Army.

County Clare
===County Cork ===

County Fermanagh
No.1 Batt. Enniskillen A. Boho B. Derrygonnelly C. Enniskillen D. Monea E. Rosinuremore

No.2 Batt. Belcoo A. Belcoo B. Doobally C. Glan Lower D. Glan Upper E. Killinagh F. Mullaghdun