List of corps of the United States explained

This is a list of field corps of the United States and Confederate States armies and the United States Marine Corps.

Active corps

, there are four active Army corps.

• I Corps
• III Corps
• V Corps
• XVIII Airborne Corps

Former corps of the World War/Cold War/Gulf War eras

• I Armored Corps
• II Corps
• II Armored Corps
• III Armored Corps
• IV Corps
• IV Armored Corps
• VI Corps
• VII Corps
• VIII Corps
• IX Corps
• X Corps
• XI Corps
• XII Corps
• XIII Corps
• XIV Corps
• XV Corps
• XVI Corps
• XIX Corps
• XX Corps
• XXI Corps
• XXII Corps
• XXIII Corps
• XXIV Corps
• XXXIII Corps – World War II – see Fourteenth United States Army
• XXXV Airborne Corps – World War II deception formation – see Operation Pastel
• XXXVI Corps (1944–1945)
• U.S. XXXVII Corps- World War II – see Fourteenth United States Army
• I Field Force, Vietnam
• II Field Force, Vietnam

World War II U.S. Marine Corps corps

• I Marine Amphibious Corps
• III Amphibious Corps
• V Amphibious Corps

Spanish–American War corps

• First Army Corps (Spanish–American War)
• Second Army Corps (Spanish–American War)
• Third Army Corps (Spanish–American War)
• Fourth Army Corps (Spanish–American War)
• Fifth Army Corps (Spanish–American War)
• Sixth Army Corps (Spanish–American War)
• Seventh Army Corps (Spanish–American War)
• Eighth Army Corps (Spanish–American War)

Civil War Union Army corps

• I Corps
• II Corps
• III Corps
• IV Corps
• V Corps
• VI Corps
• VII Corps
• VIII Corps
• IX Corps
• X Corps
• XI Corps
• XII Corps
• XIII Corps
• XIV Corps
• XV Corps
• XVI Corps
• XVII Corps
• XVIII Corps
• XIX Corps
• XX Corps
• XXI Corps
• XXII Corps
• XXIII Corps
• XXIV Corps
• XXV Corps
• Cavalry Corps

Confederate States Army corps

• First Corps, Army of the Mississippi
• Second Corps, Army of the Mississippi
• Third Corps, Army of the Mississippi
• First Corps, Army of Northern Virginia
• Second Corps, Army of Northern Virginia
• Third Corps, Army of Northern Virginia
• Fourth Corps, Army of Northern Virginia
• Cavalry Corps, Army of Northern Virginia
• First Corps, Army of the Potomac
• Second Corps, Army of the Potomac
• First Corps, Army of Tennessee
• Second Corps, Army of Tennessee