M55

• M55 (rocket), a nerve agent-filled American Cold War-era rocket • Myasishchev M-55, a Soviet reconnaissance aircraft • 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 • Zastava M55, a Yugoslav/Serbian anti-aircraft gun • Tikka M55, a Finnish rifle • M55, a folding stock version of the M50 Reising submachine gun • M-55S, a Slovenian tank, a modernization of the T-55 • M55 helmet, a Finnish variant of the Stahlhelm ==Science and technology==

• Messier 55 (M55), a globular cluster in the constellation Sagittarius • M55, a Samsung Sens laptop computer model • Siemens M55, a mobile phone • Cortex-M55, an ARM Cortex-M processor core • ThinkCentre M55, a ThinkCentre M series PC ==Transportation==

• M55 (New York City bus), a New York City Bus route in Manhattan Roads • 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 • M55 (Cape Town), a Metropolitan Route in Cape Town, South Africa ==Other uses==

• M 55, an age group for Masters athletics ==See also==