Developed in just 8 months, following an order from Stalin in Oct 1951 after evaluation of western helicopter operations in Korea, the Mi-4 Hound arrived in Apr 1952. 
- Hound-A was a troop carrier for the Air Force
- Hound-B was an early Naval ASW model
- Hound-C was initially a close air support model
- Mi-4P was a passenger model introduced by Aeroflot in Nov 1958
- Mi-4L was a VIP transport
- Mi-4S was initially a crop sprayer but became better known in Forestry support.
Derivatives & Versions | |
| Model | Year | History |
 Harbin Z-5 | 1958 | |
List of Operators of Mil Mi-4 Hound | |
| From | Organisation with model Mi-4 Hound | ||
| 1955 |
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| 1957 |
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| 1958 |
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| 1961 |
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| 1979 |
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| Construction Numbers on database of Mi-4 Hound or its versions | ||||||
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Construction Numbers | Help Us | |
| C/N | Built as | Year | History | |
| 03 97 |  CCCP-04358 : Polyarnaya Aviatsiya SSSR-04358 c/n 0397 | |||
| 04 97 | CCCP-04359 : Polyarnaya Aviatsiya SSSR-04359 c/n 0497 | |||
| 05 69 | CCCP-04332 : Polyarnaya Aviatsiya SSSR-04332 c/n 0569 | |||
| 05 97 | CCCP-04360 : Polyarnaya Aviatsiya SSSR-04360 c/n 0597 | |||
| 06 69 | CCCP-04335 : Polyarnaya Aviatsiya SSSR-04335 c/n 0669 | |||
| 07 114 |  HR-1 : On display at Central Finland Aviation Museum, by 1984 + | |||
| 07 69 | CCCP-04333 : Polyarnaya Aviatsiya SSSR-04333 c/n 0769 | |||
| 08 69 | CCCP-04336 : Polyarnaya Aviatsiya SSSR-04336 c/n 0869 | |||
| 09 114 | HH-3 : On display at Finnish Aviation Museum by 1988 | |||
| 09 69 | CCCP-04334 : Polyarnaya Aviatsiya SSSR-04334 c/n 0969 | |||
| 11 159 | CCCP-35242 : Polyarnaya Aviatsiya SSSR-35242 c/n 11159 | |||
| 12 159 | CCCP-35243 : Polyarnaya Aviatsiya SSSR-35243 c/n 12 159 | |||
 |  Z331 : preserved at Jorhat AFS memorial by 2000, still 2008. |