This is a list of field corps of the United States and Confederate States armies and the United States Marine Corps.
Active corps
As of October 2020, there are four active Army 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
- XVII 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
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