89th Brigade may refer to:
British India 89th Indian Infantry Brigade
Israel Oz Brigade, also known as 89th Brigade
Spain 89th Mixed Brigade
United Kingdom 89th Brigade (United Kingdom) 89th Brigade, Royal Field Artillery, British Army unit in World War I 89th (3rd West Lancashire) Brigade, Royal Field Artillery, British Army unit after World War I
United States 89th Military Police Brigade 89th Sustainment Brigade
See also 89th Division (disambiguation) 89th Regiment (disambiguation)