31 (number) 31st station 31st Dáil 31st Fighter Wing 31st Punjabis 31st Operations Group 31st Rescue Squadron 31st Infantry Division (Wehrmacht) 31st Division 31st Combat Training Squadron 31st Regiment 31st Airlift Squadron 31st Cavalry 31st Canadian Parliament 31st Infantry Division (United States) 31st Test and Evaluation Squadron 31st Engineer Battalion 31st parallel 31st Marine Expeditionary Unit 31st Battalion (Alberta), CEF 31st Field Artillery Regiment 31st Battalion 31st Brigade 31st Maine Infantry Regiment Judah and 31st Avenue station 31st Infantry Brigade (United Kingdom) 31st Tactical R…

Reconnaissance Squadron 31st Illinois Infantry Regiment 31st Group 31st meridian 31st Air Division Government of the 31st Dáil 31st Infantry Regiment (United States) 31st Air Defense Artillery Brigade (United States) 31st October (film) 31st New York Infantry Regiment 31st Reconnaissance Squadron 31st Division (Imperial Japanese Army) 31st Street Oslo, August 31st 31st Army 31st Rocket Army 31st Armoured Brigade (United Kingdom) 31st Ranger Bat

talion 31st Wisconsin Infantry Regiment 31st (Huntingdonshire) Regiment of Foot 31st Army Corps California's 31st senatorial district 31st Cavalry Regiment (United States) 31st Battalion, Royal Queensland Regiment 31st MMC – Yambol 31st Guards Air Assault Brigade 31st United States Congress 31st Tank Regiment (Italy) 31st Division (United Kingdom) 31st Ashura Division 31st Mechanized Infantry Brigade (Greece) 31st New Brunswick general election 31st Infantry Division "Calabria" 31st Airborne Brigade (Bundeswehr) 31st Massachusetts Infantry Regiment 31st Nova Scotia general election 31st Seoul Musi