Boeing KC-135 Stratotanker

Operators

Chile

Chilean Air Force operates 3, received its first KC-135E in February 2010.

France

French Air Force operates 11 C-135FRs and 3 KC-135s.

Singapore

Republic of Singapore Air Force has four tankers, which occasionally function as VIP transport and aeromedical missions.

Turkey

Turkish Air Force operates 7 KC-135s.

United States

NASA (until 2004)
United States Air Force operates 417 KC-135s (183 Active Duty, 64 Air Force Reserve, and 170 Air National Guard) as of September 2010.

- Air Combat Command
  - USAF Weapons School - Nellis Air Force Base, Nevada
    - 509th Weapons Squadron - Fairchild Air Force Base, Washington
- Air Education and Training Command
  - 97th Air Mobility Wing – Altus AFB, Oklahoma
    - 54th Air Refueling Squadron
- Air Mobility Command
  - 6th Air Mobility Wing – MacDill AFB, Florida
    - 91st Air Refueling Squadron
    - 99th Air Refueling Squadron – Birmingham IAP/ANGB (Active Associate unit)
    - 911th Air Refueling Squadron – Seymour Johnson AFB, North Carolina(Active associate unit)
  - 22d Air Refueling Wing – McConnell AFB, Kansas
    - 344th Air Refueling Squadron
    - 349th Air Refueling Squadron
    - 350th Air Refueling Squadron
    - 384th Air Refueling Squadron
    - 64th Air Refueling Squadron - Pease ANGB, New Hampshire (Active associate unit)
  - 92d Air Refueling Wing – Fairchild AFB, Washington
    - 92d Air Refueling Squadron
    - 93d Air Refueling Squadron
    - 912th Air Refueling Squadron - March ARB, California (Active associate unit)
  - 375th Air Mobility Wing – Scott AFB, Illinois
    - 906th Air Refueling Squadron (Active associate unit)
- Pacific Air Forces
  - 18th Wing – Kadena AB, Japan
    - 909th Air Refueling Squadron
- United States Air Forces in Europe
  - 100th Air Refueling Wing – RAF Mildenhall, England
    - 351st Air Refueling Squadron
- Air Force Reserve Command
  - 434th Air Refueling Wing – Grissom ARB, Indiana
    - 72d Air Refueling Squadron
    - 74th Air Refueling Squadron
  - 452d Air Mobility Wing – March ARB, California
    - 336th Air Refueling Squadron
  - 459th Air Refueling Wing – Andrews AFB, Maryland
    - 756th Air Refueling Squadron
  - 507th Air Refueling Wing – Tinker AFB, Oklahoma
    - 18th Air Refueling Squadron – McConnell AFB, Kansas
    - 465th Air Refueling Squadron
  - 916th Air Refueling Wing – Seymour Johnson AFB, North Carolina
    - 77th Air Refueling Squadron
  - 927th Air Refueling Wing – MacDill AFB, Florida
    - 63d Air Refueling Squadron
  - 940th Air Refueling Wing – Beale AFB, California
    - 314th Air Refueling Squadron

- Air National Guard
  - Alabama Air National Guard
    - 117th Air Refueling Wing – Birmingham IAP/ANGB
      - 106th Air Refueling Squadron
  - Alaska Air National Guard
    - 168th Air Refueling Wing – Eielson AFB
      - 168th Air Refueling Squadron
  - Arizona Air National Guard
    - 161st Air Refueling Wing – Sky Harbor IAP/ANGB
      - 197th Air Refueling Squadron
  - Hawaii Air National Guard
    - 154th Wing – Hickam AFB
      - 203d Air Refueling Squadron
  - Illinois Air National Guard
    - 126th Air Refueling Wing – Scott AFB
      - 108th Air Refueling Squadron
  - Iowa Air National Guard
    - 185th Air Refueling Wing – Sioux Gateway ANGB
      - 174th Air Refueling Squadron
  - Kansas Air National Guard
    - 190th Air Refueling Wing – Forbes Field ANGB
      - 117th Air Refueling Squadron
  - Maine Air National Guard
    - 101st Air Refueling Wing – Bangor IAP/ANGB
      - 132d Air Refueilng Squadron
  - Michigan Air National Guard
    - 127th Wing – Selfridge ANGB
      - 171st Air Refueling Squadron
  - Mississippi Air National Guard
    - 186th Air Refueling Wing – Key Field ANGB
      - 153d Air Refueling Squadron
  - Nebraska Air National Guard
    - 155th Air Refueling Wing – Lincoln ANGB
      - 173rd Air Refueling Squadron
  - New Hampshire Air National Guard
    - 157th Air Refueling Wing – Pease ANGB
      - 133d Air Refueling Squadron
  - New Jersey Air National Guard
    - 108th Air Refueling Wing – McGuire AFB
      - 141st Air Refueling Squadron
      - 150th Air Refueling Squadron
  - Ohio Air National Guard
    - 121st Air Refueling Wing – Rickenbacker ANGB
      - 145th Air Refueling Squadron
      - 166th Air Refueling Squadron
  - Pennsylvania Air National Guard
    - 171st Air Refueling Wing – Pittsburgh International Airport/Pittsburgh ARS
      - 146th Air Refueling Squadron
      - 147th Air Refueling Squadron
  - Tennessee Air National Guard
    - 134th Air Refueling Wing – McGhee Tyson ANGB
      - 151st Air Refueling Squadron
  - Utah Air National Guard
    - 151st Air Refueling Wing – Salt Lake International Airport/ANGB
  - Washington Air National Guard
    - 141st Air Refueling Wing – Fairchild AFB
      - 116th Air Refueling Squadron
  - Wisconsin Air National Guard – General Mitchell International Airport
    - 128th Air Refueling Wing

Note Italy has been reported in some sources as operating several KC-135s, however these are actually Boeing 707-300s converted to tanker configuration.

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Boeing KC-135 Stratotanker - Operators