3rd Brigade
3rd Brigade may refer to:
Australia
Belarus
British India
Canada
China
Croatia
France
Georgia
Germany
Greece
India
Iran
Ireland
Israel
Italy
Japan
Lebanon
Lithuania
Moldova
Poland
Russia
Serbia
South Africa
South Korea
Spain
Sweden
Turkey
Ukraine
United Kingdom
- 3rd Anti-Aircraft Brigade (United Kingdom)
- 3rd Armoured Brigade (United Kingdom)
- 3rd Cavalry Brigade (United Kingdom)
- 3 Commando Brigade (United Kingdom)
- 3rd Deep Recce Strike Brigade
- 3rd Guards Brigade (United Kingdom)
- 3rd Infantry Brigade (United Kingdom)
- 3rd Mounted Brigade (United Kingdom)
- 3rd (Nottinghamshire and Derbyshire) Mounted Brigade
- 3rd Parachute Brigade (United Kingdom)
- 3rd Provisional Brigade (United Kingdom)
- 3rd Reserve Brigade
- 3rd (Royal Marine) Brigade
Artillery units
- 3rd Brigade, Royal Field Artillery
- 3rd Brigade, Cinque Ports Division, Royal Artillery
- 3rd Brigade, Eastern Division, Royal Artillery
- 3rd Brigade, Northern Division, Royal Artillery
- 3rd Brigade, North Irish Division, Royal Artillery
- 3rd Brigade, Scottish Division, Royal Artillery
- 3rd Brigade, Welsh Division, Royal Artillery
- 3rd Brigade, Western Division, Royal Artillery
- 3rd (Duke of Connaught's Own) Brigade, Southern Division, Royal Artillery
- 3rd County of London Brigade Royal Field Artillery
- 3rd East Lancashire Brigade (The Bolton Artillery), Royal Field Artillery
- 3rd Home Counties (Cinque Ports) Brigade, Royal Field Artillery
- 3rd Lowland Brigade, Royal Field Artillery
- 3rd Highland Brigade, Royal Field Artillery
- 3rd (Northumbrian) Medium Brigade, Royal Garrison Artillery
- 3rd Northumbrian (County of Durham) Brigade, Royal Field Artillery
- 3rd North Midland Brigade, Royal Field Artillery
- 3rd South Midland Brigade, Royal Field Artillery
- 3rd Welsh Brigade, Royal Field Artillery
- 3rd Wessex Brigade, Royal Field Artillery
- 3rd West Riding Brigade, Royal Field Artillery
- 3rd Volunteer (Hampshire) Brigade, Southern Division, Royal Artillery
- III Brigade, Royal Horse Artillery
- III Brigade, Royal Horse Artillery (T.F.)
United States
- 3rd Brigade, 7th Infantry Division (United States)
- 3rd Brigade, 24th Infantry Division (United States)
- 3rd Brigade, 104th Division (United States)
- 3rd Chemical Brigade (United States)
- 3rd Infantry Brigade, 2nd Infantry Division
- 3rd Maneuver Enhancement Brigade
- 3rd Marine Expeditionary Brigade
- 3rd Reserve Officers' Training Corps Brigade
- 3rd Security Force Assistance Brigade
- 3rd Signal Brigade (United States)
- 3rd Support Brigade
- 3rd Sustainment Brigade (United States)
- 3rd Transportation Brigade (Expeditionary)
Brigade Combat Teams
- 3rd Brigade Combat Team, 1st Armored Division
- 3rd Brigade Combat Team, 1st Infantry Division (United States)
- 3rd Brigade Combat Team, 1st Cavalry Division
- 3rd Brigade Combat Team, 2nd Infantry Division (United States)
- 3rd Brigade Combat Team, 10th Mountain Division
- 3rd Brigade Combat Team, 25th Infantry Division (United States)
- 3rd Brigade Combat Team, 82nd Airborne Division
- 3rd Brigade Combat Team, 101st Airborne Division (United States)