M13
The abbreviations M13 or M13 denote
- a brown bear, see M13 (bear)
- the bright globular cluster in the constellation Hercules, see Messier 13
- a bacteriophage
- an Italian main battle tank, see M13 / 40
- a line of the Berlin tram
- Motorways and trunk roads
- M13 (Armenia)
- M13 (GUS) (former trunk road)
- M 13 (Ukraine)
