From Wikipedia, the free encyclopedia
M55 or M-55 may refer to:
- M55 rocket, a nerve agent filled American Cold War-era rocket
- Myasishchev M-55, a Soviet reconnaissance aircraft
- Messier 55 (M55), a globular cluster in the constellation Sagittarius
- a Samsung Sens laptop computer model
- a Soviet artillery piece, see 152 mm towed gun-howitzer M1955 (D-20)
- M55 Self Propelled Howitzer, an American self-propelled artillery piece
- M55 machine gun trailer mount, an American quadruple .50 caliber machine gun system based on the M45 Quadmount
- M55 motorway, a road in Lancashire, United Kingdom, connecting Blackpool and the M6 at Preston
- M55 highway (Russia), a 1113 km road connecting Irkutsk and Chita
- M-55 (Michigan highway), a road in Michigan connecting Lake Huron and Lake Michigan
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