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 17th ...
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M49 motorway
The M49 motorway is just long and forms a link between the M5 motorway west of Bristol at junction 18A and the M4 motorway at junction 22 before the Second Severn Crossing (now officially renamed the Prince of Wales Bridge). It was constructe ...
, 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)
The M49 is a short metropolitan route in Greater Johannesburg, South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch ...
, 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), 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 c ...
, 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, Switzerl ...
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