YM, Ym, or ym may refer to: Arts and entertainment YM (magazine), an American teen magazine Yngwie J. Malmsteen, Swedish guitarist Yokozuna Monogatari, a 1994 Japanese sumo wrestling video game Businesses and organizations Montenegro Airlines (IATA airport code YM) Yarmouth Mariners, a Maritime Junior A Hockey League team Youth Meeting, a program of CISV International Dow Jones Industrial Average (futures symbol YM) Young Marines, an American youth organization that promotes a drug-free lifestyle Science and technology .ym, the Atari ST/Amstrad CPC YM2149 sound chip format YM (selective medium), a selective growth medium which is a combination of yeast and mold Yoctomolar (yM), a unit of molar concentration Yoctometre (ym), a unit of length or distance Yottametre (Ym), a unit of length or distance Other uses Yam, Ugaritic deity of the sea YM, the US Navy Hull classification symbol for a self-propelled dredge "Ynn� muuta", a Finnish phrase meaning roughly "and the others" or "etc."