M is a 1931 German crime film directed by Fritz Lang and written by Lang and his wife Thea von Harbou. M was Lang's first foray into sound film although he had directed over a dozen films previously including Metropolis. Over the years the film has become a defining classic that rivals Lang's other works for the title of "magnum opus".

M is a 1951 a remake of Fritz Lang's M (1931), shifting the action from Berlin to Los Angeles. The remake, directed by Joseph Losey with David Wayne playing Peter Lorre's role, was not well received by critics or audiences. It is rarely seen today.

M is the title of a book by Australian author Peter Robb about the Italian painter Michelangelo Merisi da Caravaggio. First published in 1998 in Australia by Duffy and Snellgrove, the book provoked controversy on its being published in Britain in 2000.

M, the thirteenth letter of the English alphabet, is a vocal consonant, and from the manner of its formation, is called the labio-nasal consonant. See Guide to Pronunciation, §§ 178-180, 242.

As a numeral, M stands for one thousand, both in English and Latin.

the 13th letter of the Roman alphabet

M is a fictional character in Ian Fleming's James Bond series, as well as the films in the Bond franchise.

M is the name of Robin Scott's musical collaboration who had a UK hit in April 1979 with the track Pop Muzik, featuring the distinctive vocals of Brigit Vinchon. Pop Muzik reached No. 1 in the US on November 3 1979, and earlier that same year had reached No. 2 in the UK charts. Other members of M at one time or another included Mark King, Wally Badarou and Phil Gould, who were later to become Level 42.

M (Monet Yvette Clarisse Maria Therese St. Croix) is a fictional comic book superhero, a mutant who appears in the X-Men family of books published by Marvel Comics. Created by writer Scott Lobdell and artist Chris Bachalo, she originally was a member of the teenage mutant group Generation X, and now appears in the series X-Factor.

The M Nassau Street Local is a service of the New York City Subway. It is colored brown on route signs, station signs, and the official subway map, since it runs on the BMT Nassau Street Line in Manhattan. The runs at all times.

M is the name of a professional videocassette format developed around 1982 by Matsushita and RCA. It was developed as a competitor to Sony's Betacam format.

A quadrat, the face or top of which is a perfect square; also, the size of such a square in any given size of type, used as the unit of measurement for that type: 500 m's of pica would be a piece of matter whose length and breadth in pica m's multiplied together produce that number.

the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards)

"M" is the 19th single released by Ayumi Hamasaki on December 13, 2000. Considered to be one of her greatest songs by fans, this single sold 1,319,000. This is the first song that she composed in addition to already writing the lyrics and is considered one of her signature songs.

A brand or stigma, having the shape of an M, formerly impressed on one convicted of manslaughter and admitted to the benefit of clergy.

concentration measured by the number of moles of solute per liter of solvent

the cardinal number that is the product of 10 and 100

denoting a quantity consisting of 1,000 items or units