List of United States military bases in Illinois is a listing of current and former United States military bases located in the US State of Illinois.

Air Force

• Carmi Air Force Station, Carmi, Illinois (closed in 1957; now site of Carmi Municipal Airport)
• Chanute Air Force Base, Rantoul, Illinois (closed in 1993)
• Hanna City Air Force Station, Hanna City, Illinois (closed in 1968; now site of an FAA Long Range Radar)
• Scott Air Force Base, Shiloh, Illinois

Army

• Camp Butler, Springfield, Illinois
• Camp Ellis, Bernadotte, Illinois
• Camp Pine, Des Plaines, Illinois
• Camp Skokie Valley, Glenview, Illinois
• Camp Thornton, Thornton, Illinois
• Charles M. Price Support Center, Granite City, Illinois (Closed circa 2000)
• Fort Dearborn, Chicago
• Fort Defiance, Cairo, Illinois
• Fort Massac, Metropolis, Illinois
• Fort Sheridan, Highwood, Illinois (closed 1993)
• Fort Arlington, Arlington Heights, Illinois
• Green River Ordnance Plant
• Haley Army Airfield
• Joliet Army Ammunition Plant, Joliet, Illinois
• Rock Island Arsenal, Rock Island, Illinois
• Savanna Army Depot, Savanna, Illinois (Closed circa 2000)

Nike

• Project Nike, 20 plus sites, near Chicago and Metro-East.

Navy

• Arlington Naval Outer Landing Field, Arlington Heights, Illinois
• Libertyville Naval Outer Landing Field, Libertyville, Illinois
• Naval Station Great Lakes, North Chicago, Illinois
• Naval Air Station Glenview, Glenview, Illinois (Closed)

See also

• List of United States military bases
• List of United States Army installations
• List of United States Navy installations
• List of United States Air Force installations
• List of United States Marine Corps installations