M49 or M-49 may be:
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Messier 49
Messier 49 (also known as M49 or NGC 4472) is a giant elliptical galaxy about away in the equatorial constellation of Virgo. This galaxy was discovered by astronomer Charles Messier in 1777.
As an elliptical galaxy, Messier 49 has the physica ...
, an elliptical galaxy in the constellation Virgo
* The 49th known
Mersenne prime
In mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form for some integer . They are named after Marin Mersenne, a French Minim friar, who studied them in the early 1 ...
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M49 motorway
The M49 is a motorway in England that links the M4 (J22) with the M5 (J18A). The southern end is on the outskirts of Avonmouth and the northern end is immediately to the east of the Prince of Wales Bridge which was constructed at the same ti ...
, a motorway in Great Britain
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M49 (Cape Town), a Metropolitan Route in Cape Town, South Africa
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M49 (Johannesburg), a Metropolitan Route in Johannesburg, South Africa
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M49 telescope, a telescope used by the United States military
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M-49 (Michigan highway)
M-49 is a north–south Michigan State Trunkline Highway System, state trunkline highway in the south-central portion of the US state of Michigan. It runs from the Ohio state line north to Litchfield, Michigan, Litchfield through rural Hillsdal ...
, a Michigan state highway
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UN M49
UN M49 or the Standard Country or Area Codes for Statistical Use (Series M, No. 49) is a standard for area codes used by the United Nations for statistical purposes, developed and maintained by the United Nations Statistics Division. Each area code ...
, the United Nations' "Standard Country or Area Codes for Statistical Use"
* M/49, or the Neuhausen pistol, the Danish name for the
SIG Sauer P210
The SIG P210 (Swiss Army designation Pistole 49, the civilian model was known as SP47/8 prior to 1957) is a locked breech self loading, semi-automatic pistol designed and manufactured in Neuhausen am Rheinfall (Canton of Schaffhausen, Switzerla ...
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