33rd Division
- 33rd Air Division
- 33rd Al-Mahdi Division
- 33rd Armoured Division
- 33rd Brigade (disambiguation)
- 33rd Division (German Empire)
- 33rd Division (Imperial Japanese Army)
- 33rd Division (Spain)
- 33rd Division (United Kingdom)
- 33rd Infantry Division (France)
- 33rd Infantry Division (Poland)
- 33rd Infantry Division (United States)
- 33rd Infantry Division (Wehrmacht)
- 33rd Infantry Division Acqui
- 33rd Motor Rifle Division
- 33rd Regiment (disambiguation)
- 33rd Reserve Division (German Empire)
- 33rd Squadron (disambiguation)
- 33rd Waffen Cavalry Division of the SS (3rd Hungarian)
- 33rd Waffen Grenadier Division of the SS Charlemagne (1st French)
- Division (military)
- XXXIII Corps (disambiguation)