The Charomskiy ACh-30 was a Soviet aircraft diesel engine developed during World War II.

Production was reinitiated in the summer of 1942 and continued until September 1945 to meet the need for an economical engine to power the Soviet long-range bombers like the Petlyakov Pe-8 and the Yermolayev Yer-2.

Production was planned to be transferred to the Kharkov Tractor Factory, but this was cancelled before any engines were built.

The M-30 had proven to be unsatisfactory in service, as it was unreliable and troublesome at high altitudes and in cold conditions.

Thirty-five incomplete M-30 engines were modified beginning in August into M-30Bs and then thirty-four M-30Bs were produced during the rest of 1942.

The jet engine's thrust was 1,925 lbf (8.56 kN) and the equivalent horsepower of the combination was 4,500 hp (3,400 kW).