Irish Brigade
- 30th Missouri Infantry Regiment
- Catholic Irish Brigade (1794–1798)
- Franco-Irish Ambulance Brigade
- Independent Irish Party
- Irish Brigade (France)
- Irish Brigade (Spanish Civil War)
- Irish Brigade (Union Army)
- Irish Brigade (World War I)
- Irish Guards
- Irish Legion
- Irish commandos
- Irish expedition to Scotland
- Irish regiment
- Liverpool Irish
- London Irish Rifles
- Myles O'Reilly (politician)
- North Irish Brigade
- The Irish Brigade (band)
- Tyneside Irish Brigade
- War of the Three Kingdoms