The Office of Special Investigations has been the Department of the Air Force's major investigative service since Aug.1, 1948. The agency reports to the Inspector General, Office of the Secretary of the Air Force. This Field Operating Agency is headquartered at Quantico, Va., has seven field investigations regions aligned with the Air Force major commands and has more than 260 subordinate field units around the world comprised of squadrons, detachments and operating locations. OSI is the executive agency for the Department of Defense Cyber Crime Center and operates the U.S. Air Force Special Investigations Academy.

While the regions serve the investigative needs of the aligned commands, all OSI units and personnel remain, by law, independent of those commands, and their chains of command flow directly to OSI headquarters. This organizational independence ensures unbiased investigations.


Region 1
4375 Chidlaw Road, Door S007
Wright-Patterson AFB, OH 45433-5006
Phone (937) 257-1680
Aligned to Support:
Air Force Materiel Command; Air Force Special Operations Command; Air Force Reserve Command
Region 2
175 Sweeney Blvd. Bldg. 775, Ste. 133
Joint Base Langley-Eustis, VA 23665
Phone (757) 225-1171
Aligned to Support:
Air Combat Command; U.S. Central Command; U.S. Southern Command; U.S. Strategic Command; U.S. Air Forces Central Command; 12th Air Force (Air Forces Southern); 16th Air Force
Region 3
861 South Drive, Suite 100
Scott AFB, IL 62225-5014
Phone (618) 256-8872
Aligned to Support:
Air Mobility Command; U.S. Transportation Command; HQ Special Operations Command; HQ Central Command; Air Force District of Washington; Pentagon Force Protection Agency
Region 4
530 F Street East, Bldg. 720
Joint Base San Antonio-Randolph, TX 78150-4417
Phone (210) 652-6152
Aligned to Support:
Air Education and Training Command; 2nd Air Force; 19th Air Force; Air University
Region 5 
UNIT 3291
APO AE 09094-3291
(Ramstein Air Base, Germany)
Phone 011-49-6371-47-7154
Aligned to Support:
U.S. Air Forces in Europe and Air Forces Africa; U.S. European Command; U.S. Africa Command; 3rd Air Force
Region 6
25 E Street, Suite E-363
Joint Base Pearl Harbor-Hickam, HI 96853-5495
Phone (315) 449-3823
Aligned to Support:
Pacific Air Forces; U.S. Pacific Command; Special Operations Command, Pacific; 5th Air Force
7th Air Force; 11th Air Force
Region 8
250 South Peterson Blvd. Ste 225
Peterson SFB, CO 80914-4480
Phone (719) 554-5715
Aligned to Support:
U.S. Space Force; Air Force Global Strike Command; U.S. Northern Command; 8th Air Force
14th Air Force; 20th Air Force


Click here  for the OSI Unit Location Directory.   

All locations in this directory are placed as accurately as possible in their respective areas. Due to mission requirements, unit locations may change. Questions or comments about this Unit Location Directory may be directed to OSI Public Affairs at: AFOSI.PA@us.af.mil