33 Squadron or 33rd Squadron may refer to:
No. 33 Squadron RAAF, a unit of the Australian Royal Air Force No. 33 Squadron (Finland), a unit of the Finnish Air Force No. 33 Squadron RAF, a unit of the United Kingdom Royal Air Force No. 33 Squadron IAF, a unit of the Indian Air Force 33d Flying Training Squadron, a unit of the United States Air Force 33 Squadron (Portugal), a unit of the Portuguese Air Force VF-33 (Fighter Squadron 33), a disestablished unit of the United States Navy
See also 33rd Division (disambiguation) 33rd Brigade (disambiguation) 33rd Regiment (disambiguation)