1st Division

1st Division may refer to:

Airborne divisions

 * 1st Parachute Division (Germany)
 * 1st Airborne Division (United Kingdom)
 * 1st Airmobile Division (Ukraine)

Armoured divisions

 * 1st Armoured Division (Australia)
 * 1st Canadian Armoured Division or 5th Canadian Division
 * 1st Armored Division (People's Republic of China)
 * 1st Armored Division (France)
 * 1st Light Mechanized Division (France)
 * 1st Panzer Division (Bundeswehr), (West) Germany
 * 1st Panzer Division (Wehrmacht), Nazi Germany
 * Fallschirm-Panzer Division 1 Hermann Göring, Nazi Germany
 * 1st Armoured Division (India)
 * 1st Tank Division (Imperial Japanese Army)
 * 1st Armoured Division (Poland)
 * 1st Mechanised Division (Poland)
 * 1st Mechanized Division (Soviet Union)
 * 1st Armoured Division (United Kingdom)
 * 1st Armored Division (United States)

Artillery divisions

 * 1st Anti-Aircraft Division (Japan)
 * 1st Anti-Aircraft Artillery Division (Soviet Union)
 * 1st Anti-Aircraft Division (United Kingdom)

Aviation divisions

 * 1st Fighter Division (China)

Cavalry divisions

 * 1st Light Cavalry Division (France)
 * 1st Foot Cavalry Division (France)
 * 1st Cavalry Division (German Empire)
 * 1st Cavalry Division (Reichswehr), Weimar Republic, Germany
 * 1st Cavalry Division (Wehrmacht), Nazi Germany
 * 1st Light Division (Germany)
 * 1st Indian Cavalry Division – British Indian Army during World War I
 * 1st Cavalry Division Eugenio di Savoia – Italian Army during World War II
 * 1st Cavalry Division (Poland)
 * 1st Guard Cavalry Division (Russian Empire)
 * 1st Cavalry Division (Soviet Union)
 * 1st Cavalry Division (Thailand)
 * 1st Cavalry Division (United Kingdom)
 * 1st Mounted Division (United Kingdom)
 * 1st Cavalry Division (United States)

Infantry divisions

 * 1st Guards Infantry Division (Russian Empire)
 * 1st Division (Australia)
 * 1st Canadian Division
 * 1st Commonwealth Division
 * 1st Division (Colombia)
 * 1st Division (Estonia)
 * 1st Colonial Infantry Division (France)
 * 1st Free French Division
 * 1st Division (German Empire)
 * 1st Infantry Division (Wehrmacht), Nazi Germany
 * 1st Mountain Division (Wehrmacht), Nazi Germany
 * 1st Mountain Division (Bundeswehr), West Germany
 * 1st Naval Infantry Division (Wehrmacht), Nazi Germany
 * 1st Ski Division (Wehrmacht) Nazi Germany
 * 1st SS Panzer Division Leibstandarte SS Adolf Hitler, Nazi Germany
 * 1st Infantry Division (Azerbaijan, 1918)
 * 1st Infantry Division (Greece)
 * Infantry Division 1 Kostrad, Indonesia
 * 1st Alpine Division Taurinense, Italy
 * 1st Blackshirt Division (23 March), Italy
 * 1st Mountain Infantry Division Superga, Italy
 * 1st Division (Imperial Japanese Army)
 * 1st Guards Division (Imperial Japanese Army)
 * 1st Division (Japan)
 * 1st Division (New Zealand)
 * 1st Division (North Korea)
 * 1st Infantry Division (Philippines)
 * Polish 1st Tadeusz Kościuszko Infantry Division
 * 1st Legions Infantry Division (Poland)
 * 1st Grenadiers Division (Poland)
 * 1st Infantry Division (Romania)
 * 1st Caucasian Rifle Division (Russian Empire)
 * 1st Infantry Division (South Africa)
 * 1st Infantry Division (South Korea)
 * 1st Rifle Division (Soviet Union)
 * 1st Caucasian Rifle Division (Soviet Union)
 * 1st Division (South Vietnam)
 * 1st Division (Spain)
 * 1st Asturian Division (Spain)
 * 1st Division (Thailand), King's Guard
 * 1st Ukrainian Division of the Ukrainian National Army
 * 1st Zadneprovsk Ukrainian Soviet Division
 * 1st (African) Division, United Kingdom
 * 1st (Peshawar) Division, British Indian Army before and during World War I
 * 1st Infantry Division (United Kingdom)
 * 1st London Division, United Kingdom
 * 1st Infantry Division (United States)
 * 1st Marine Division (United States)
 * 1st Division (Vietnam)

Naval divisions

 * 1st Division (Royal Navy), Home Fleet, United Kingdom

Sports

 * Azadegan League
 * Cypriot First Division, Cypriot's top men's football division
 * Danish 1st Division
 * Football League First Division, of the English football league system
 * Hong Kong First Division League
 * Kategoria e Parë, of the Albanian football league system
 * League of Ireland First Division
 * Scottish Football League First Division
 * Uzbekistan Pro League
 * First division (baseball)