1st Brigade may refer to:
Australia
editCanada
editCroatia
editCzechoslovakia
editEstonia
editFrance
editGermany
editIsrael
editJapan
editPoland
editNew Zealand
editRomania
editSouth Africa
editSpain
editUkraine
editUnited Kingdom
edit- 1st Artillery Brigade (United Kingdom)
- 1st Airlanding Brigade (United Kingdom)
- 1st Army Tank Brigade (United Kingdom)
- 1st Armoured Brigade (United Kingdom)
- 1st Armoured Infantry Brigade (United Kingdom)
- 1st Armoured Reconnaissance Brigade (United Kingdom)
- 1st Assault Brigade Royal Engineers
- 1st Cavalry Brigade (United Kingdom)
- 1st Composite Mounted Brigade
- 1st Gibraltar Brigade
- 1st Guards Brigade (United Kingdom)
- 1st Malaya Infantry Brigade
- 1st Armoured Infantry Brigade (United Kingdom)
- 1st Parachute Brigade (United Kingdom)
- 1st Special Service Brigade
- 1st Signal Brigade (United Kingdom)
- 1st Brigade, Royal Field Artillery
- I Brigade, Royal Horse Artillery
- I Brigade, Royal Horse Artillery (T.F.)
United States
edit- 1st Air Cavalry Brigade
- 1st Brigade Combat Team, 1st Infantry Division (United States)
- 1st Brigade Combat Team, 1st Cavalry Division (United States)
- 1st Brigade Combat Team, 10th Mountain Division (United States)
- 1st Brigade, 7th Infantry Division (United States)
- 1st Brigade, 24th Infantry Division (United States)
- 1st Brigade, 104th Division (United States)
- 1st Marine Expeditionary Brigade (United States)
- 1st Provisional Marine Brigade
- 1st Sustainment Brigade (United States)