In military terms, 105th Brigade or 105th Infantry Brigade may refer to:
Germany 105th Panzer Brigade
North Korea 105th Armored Brigade (North Korea)
Serbian Krajina 105th Aviation Brigade, an aviation unit of the Serbian Army of Krajina
Ukraine 105th Territorial Defense Brigade, a unit of the Ukrainian Territorial Defense Forces
United Kingdom 105th Brigade (United Kingdom), a British Army formation during World War I 105th (Howitzer) Brigade, Royal Field Artillery, a British Army unit during World War I 105th (Bedfordshire Yeomanry) Brigade, Royal Field Artillery, a British Army unit after World War I
See also 105th Division (disambiguation) 105th Regiment (disambiguation)