Contents page for 3RD B
- 3rd Baltic Front
- 3rd Bangladesh National Film Awards
- 3rd Bass
- 3rd Battalion
- 3rd Battalion (Australia)
- 3rd Battalion (Toronto Regiment), CEF
- 3rd Battalion International Legion (Ukraine)
- 3rd Battalion Massachusetts Rifles
- 3rd Battalion, 10th Marines
- 3rd Battalion, 11th Marines
- 3rd Battalion, 12th Marines
- 3rd Battalion, 14th Marines
- 3rd Battalion, 153rd Infantry Regiment
- 3rd Battalion, 16th Field Artillery Regiment
- 3rd Battalion, 187th Infantry Regiment
- 3rd Battalion, 1st Marines
- 3rd Battalion, 23rd Marines
- 3rd Battalion, 24th Marines
- 3rd Battalion, 25th Marines
- 3rd Battalion, 26th Marines
- 3rd Battalion, 28th Marines
- 3rd Battalion, 29th Field Artillery Regiment (United States)
- 3rd Battalion, 2nd Marines
- 3rd Battalion, 319th Field Artillery Regiment
- 3rd Battalion, 320th Field Artillery Regiment
- 3rd Battalion, 321st Field Artillery Regiment
- 3rd Battalion, 3rd Marines
- 3rd Battalion, 4th Marines
- 3rd Battalion, 5th Marines
- 3rd Battalion, 69th Armor Regiment
- 3rd Battalion, 6th Marines
- 3rd Battalion, 7th Marines
- 3rd Battalion, 8th Marines
- 3rd Battalion, 9th Marines
- 3rd Battalion, Parachute Regiment
- 3rd Battalion, Royal Anglian Regiment
- 3rd Battalion, Royal Australian Regiment
- 3rd Battalion, Royal Canadian Regiment
- 3rd Battalion, Ulster Defence Regiment
- 3rd Battalion, Yorkshire Volunteers
- 3rd Battle Squadron
- 3rd Battlecruiser Squadron
- 3rd BC Card Cup World Baduk Championship
- 3rd Beijing College Student Film Festival
- 3rd Belorussian Front
- 3rd Bengal Light Cavalry
- 3rd Berlin International Film Festival
- 3rd Bersaglieri Regiment
- 3rd Blue Dragon Series Awards
- 3rd Bodil Awards
- 3rd Bombardment Squadron
- 3rd Bombay European Regiment
- 3rd Brahmans
- 3rd BRICS summit
- 3rd bridge
- 3rd Brigade
- 3rd Brigade (Australia)
- 3rd Brigade Combat Team
- 3rd Brigade Combat Team, 10th Mountain Division
- 3rd Brigade Combat Team, 1st Armored Division (United States)
- 3rd Brigade Combat Team, 1st Cavalry Division
- 3rd Brigade Combat Team, 1st Infantry Division (United States)
- 3rd Brigade, 104th Division (United States)
- 3rd Brigade, 7th Infantry Division (United States)
- 3rd Brigade, Polish Legions
- 3rd Brigade, Royal Field Artillery
- 3rd British Academy Film Awards
- 3rd British Academy Games Awards
