I Corps

• 1 Squadron (disambiguation)
• 1st Airborne Corps (Soviet Union)
• 1st Army (disambiguation)
• 1st Army Corps (Armed Forces of South Russia)
• 1st Army Corps (France)
• 1st Army Corps (Russian Empire)
• 1st Army Corps (Soviet Union)
• 1st Army Corps (disambiguation)
• 1st Assault Aviation Corps
• 1st Brigade (disambiguation)
• 1st Cavalry Corps (Russian Empire)
• 1st Corps (Vietnam People's Army)
• 1st Division (disambiguation)
• 1st Guards Assault Aviation Corps
• 1st Guards Mechanized Corps (Soviet Union)
• 1st Regiment (disambiguation)
• 1st Rifle Corps
• 1st Territorial Army Corps (Romania)
• Finnish I Corps (Winter War)
• First Army Corps (Spanish-American War)
• First Corps, Army of Northern Virginia
• First Corps, Army of Tennessee
• I ANZAC Corps
• I Airborne Corps (United Kingdom)
• I Amphibious Corps
• I Armored Corps (United States)
• I Army Corps (Greece)
• I Army Corps (Wehrmacht)
• I Canadian Corps
• I Cavalry Corps (German Empire)
• I Cavalry Corps (Grande Armée)
• I Corps (Australia)
• I Corps (Belgium)
• I Corps (Bosnia and Herzegovina)
• I Corps (British India)
• I Corps (Czechoslovakia)
• I Corps (German Empire)
• I Corps (Grande Armée)
• I Corps (India)
• I Corps (North Korea)
• I Corps (Ottoman Empire)
• I Corps (Pakistan)
• I Corps (South Korea)
• I Corps (South Vietnam)
• I Corps (Union Army)
• I Corps (United Kingdom)
• I Corps (United States)
• I Field Force, Vietnam
• I Reserve Corps (German Empire)
• I Royal Bavarian Corps
• I Royal Bavarian Reserve Corps
• I SS Panzer Corps
• List of military corps by number
• Polish I Corps (disambiguation)