GM-1
The original designation of the Mil Mi-1 prototypes, powered by a AI-26GR 500-550 hp radial engine (later AI-26GRF).

Mi-1
Three-seat light general-purpose helicopter, seating a pilot and two passengers, powered by a AI-26GRF 575 hp radial piston engine.
Initial production model.

Mi-1T
Three-seat general-purpose transport helicopter, seating a pilot and two passengers, powered by a AI-26V radial piston engine.

Mi-1KR (TKR)
Light reconnaissance and liaison helicopter of 1956, basing on Mi-1T.
Mi-1NKh
Three-seat general-purpose utility helicopter, basing on Mi-1T. Designed to be used as an agricultural aircraft, air ambulance, passenger transport, air mail, freight transport helicopter (NKh—narodnoye khozyastvo—National Economy).

Mi-1A
Three-seat general-purpose transport helicopter of 1957, seating a pilot and two passengers, with increased reliability.

Mi-1AKR
Light reconnaissance and liaison helicopter, basing on Mi-1A.
Mi-1U/TU/AU/MU
Dual-control training helicopter variants (respectively, of basic Mi-1, T, A and M models).

Mi-1M
Four-seat light general-purpose helicopter of 1957, seating a pilot and three passengers.
Visible changes are: raised roof above a cabin, blunter nose shape, and horizontal bottom windows' line instead of slanted.

Mi-1M Moskvich
Civil transport helicopter for Aeroflot, with better cabin soundproofing, equipped with hydraulic controls and an all-metal rotor.

Mi-1MNKh
Four-seat general-purpose utility helicopter, basing on Mi-1M. Designed to be used as an agricultural aircraft, air ambulance, passenger transport, air mail, freight transport helicopter (NKh—narodnoye khozyastvo—National Economy).

Mi-1MG
Float-equipped version of the Mi-1M for whaling ships, of 1958 (2 made).

Mi-1MRK
Prototype of a liaison helicopter, basing on Mi-1M (razvedyvatelno-korrektirovochnoi—reconnaissance-artillery correcting), tested in 1960-1962.

Mi-1MU
Prototype of an armed variant, tested from 1961, with four 3M11 Falanga (AT-2) or six 9M14 Malyutka (AT-3) anti-tank missiles.

SM-1 (SM-1/300)
Polish production version, powered by a LiT-3 radial piston engine.
The Mil Mi-1 helicopter built by WSK PZL-Świdnik under licence in Poland.

SM-1/600
Polish production version with increased reliability of 600 hours, of 1957 (factory designation).

SM-1Sz
Dual-control training helicopter.

SM-1W
Polish production version of the Mi-1M, of 1960.

SM-1Wb
Polish production version of the Mi-1M, of 1963, with increased reliability of 800 hours (factory designation).

SM-1WS
Air ambulance helicopter.

SM-1WSz
Dual-control training helicopter.

SM-1WZ
Agricultural helicopter.

SM-2
Improved Polish version with a stretched fuselage, seating a pilot and four passengers.

Mi-3
Improved version with four bladed main rotor.
Designation reused for a planned Mi-2 derivative.
GM-1
The original designation of the Mil Mi-1 prototypes, powered by a AI-26GR 500-550 hp radial engine (later AI-26GRF).
Mi-1
Three-seat light general-purpose helicopter, seating a pilot and two passengers, powered by a AI-26GRF 575 hp radial piston engine. Initial production model.
Mi-1T
Three-seat general-purpose transport helicopter, seating a pilot and two passengers, powered by a AI-26V radial piston engine.
Mi-1KR (TKR)
Light reconnaissance and liaison helicopter of 1956, basing on Mi-1T.
Mi-1NKh
Three-seat general-purpose utility helicopter, basing on Mi-1T. Designed to be used as an agricultural aircraft, air ambulance, passenger transport, air mail, freight transport helicopter (NKh—narodnoye khozyastvo—National Economy).
Mi-1A
Three-seat general-purpose transport helicopter of 1957, seating a pilot and two passengers, with increased reliability.
Mi-1AKR
Light reconnaissance and liaison helicopter, basing on Mi-1A.
Mi-1U/TU/AU/MU
Dual-control training helicopter variants (respectively, of basic Mi-1, T, A and M models).
Mi-1M
Four-seat light general-purpose helicopter of 1957, seating a pilot and three passengers. Visible changes are: raised roof above a cabin, blunter nose shape, and horizontal bottom windows' line instead of slanted.
Mi-1M Moskvich
Civil transport helicopter for Aeroflot, with better cabin soundproofing, equipped with hydraulic controls and an all-metal rotor.
Mi-1MNKh
Four-seat general-purpose utility helicopter, basing on Mi-1M. Designed to be used as an agricultural aircraft, air ambulance, passenger transport, air mail, freight transport helicopter (NKh—narodnoye khozyastvo—National Economy).
Mi-1MG
Float-equipped version of the Mi-1M for whaling ships, of 1958 (2 made).
Mi-1MRK
Prototype of a liaison helicopter, basing on Mi-1M (razvedyvatelno-korrektirovochnoi—reconnaissance-artillery correcting), tested in 1960-1962.
Mi-1MU
Prototype of an armed variant, tested from 1961, with four 3M11 Falanga (AT-2) or six 9M14 Malyutka (AT-3) anti-tank missiles.
SM-1 (SM-1/300)
Polish production version, powered by a LiT-3 radial piston engine. The Mil Mi-1 helicopter built by WSK PZL-Świdnik under licence in Poland.
SM-1/600
Polish production version with increased reliability of 600 hours, of 1957 (factory designation).
SM-1Sz
Dual-control training helicopter.
SM-1W
Polish production version of the Mi-1M, of 1960.
SM-1Wb
Polish production version of the Mi-1M, of 1963, with increased reliability of 800 hours (factory designation).
SM-1WS
Air ambulance helicopter.
SM-1WSz
Dual-control training helicopter.
SM-1WZ
Agricultural helicopter.
SM-2
Improved Polish version with a stretched fuselage, seating a pilot and four passengers.
Mi-3
Improved version with four bladed main rotor. Designation reused for a planned Mi-2 derivative.
Mil Mi-1