M55
The abbreviation M55 or M-55 stands for:
- a rocket of the US Army for the use of nerve gas, see M55 (rocket)
- a Soviet spy plane from the Cold War, see Myasishchev M-55
- a globular cluster, see Messier 55
- a self-propelled howitzer, see M55 (self-propelled howitzer)
- a Russian trunk road, see M55 (Russia)
- a motorway in Great Britain, see M55 motorway
- a highway in the US state of Michigan, see M-55 (Michigan)
