Operators
| 1955-1971 |  US Marine Corps |
| 1955-1970 | US Navy |
| 1955-1970 | US Army Aviation |
| 1956-1976 |  Armée de l'Air |
| 1956-1968 |  Westland |
| 1957-1972 |  Heeresflieger |
| 1958-1969 |  Heil Ha'Avir |
| 1958-?? |  Japan Maritime Self-Defense Force |
| 1959-1979 |  Marina Militare Italiana |
| 1960-1972 |  Marine Luchtvaartdienst |
| 1962-1965 |  Força Aérea Brasileira |
| 1962-1978 |  Armada de Chile |
| 1962-1975 |  Không lực Việt Nam Cộng hòa |
| 1962-2003 |  Royal Thai Air Force |
| 1963-1975 | Marineflieger |
| 1965-1974 | Força Aeronaval da Marinha do Brasil |
| 1965-?? |  Lao People's Armed Forces |
| 1965-1975 | Air America |
| 1971-1992 |  Aviacion Naval Uruguaya |
| 1971-1974 | US Air Force |
| 1973-1982 |  Air Greenland |
| 1974-1981 | British European Airways |
| 1974-1981 | British Airways Helicopters |
| 1975-1980 |  Fuerza Aerea Argentina |
| 1994- | 5 State Helicopters |
| Helicopteros Marinos |
|
 Okanagan Helicopters |
|
| State of California |
|
| Carson Helicopters |