M55

The abbreviation M55 or M -55 may refer to:

• A missile of the U.S. Army for the use of nerve gas; see M55 (rocket)
• A Soviet spy plane from the Cold War; see Mjassischtschew M -55
• A globular cluster; see Messier 55
• A self-propelled howitzer; see M55 ( armored howitzer )
• A Russian highway; see M55 (Russia)
• A motorway in Great Britain; see M55 motorway
• M -55 " Michigan Highway" in the U.S. state of Michigan

• Disambiguation
• Abbreviation