The LOM M137 is a Czech aircraft engine, designed and produced by LOM Praha (Letecke Opravny Malesice, Praha) of Prague for use in light aircraft.
The engine is a six-cylinder four-stroke, in-line, displacement, air-cooled, direct drive, gasoline engine design. It employs dual magneto ignition and produces for take-off at 2750 rpm, with a compression ratio of 6.3.