M55
# M55

M55 or M-55 may refer to:

## Military

* 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

## 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
