M39
The abbreviations M39 , M 39 or M-39 denote, among other things
- an open star cluster in the swan, see Messier 39
- a standardized lens thread , see M39 (lens connection)
- a Finnish carbine version of the Mosin Nagant rifle
- an armored personnel carrier of American production, see M39 (tank)
- a machine cannon , caliber 20 mm, see M39 (cannon)
- an expressway between Kazakhstan and Kyrgyzstan, see M39 (Kyrgyzstan)
- a street in the US state of Michigan, see M-39 (Michigan)
- a Dutch WWII tank, see M39 Pantserwagen
