YM

YM, Ym, or ym may refer to:

Arts and entertainment

• YM (magazine), an American teen magazine
• Yngwie J. Malmsteen, Swedish guitarist

Businesses and organizations

• Dow Jones Industrial Average (futures symbol YM)
• Montenegro Airlines (IATA airport code YM)
• Yang Ming Marine Transport Corporation, a Taiwanese shipping company, that prefixes its ships' names with YM
• Yarmouth Mariners, a Maritime Junior A Hockey League team
• Yield management, a variable pricing strategy based on understanding consumer behavior in order to maximize profits
• Young Marines, an American youth organization that promotes a drug-free lifestyle
• Youth Meeting, a program of CISV International

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 (god), Ugaritic deity of the sea
• Dredge, self propelled (YM), a US Navy hull classification symbol
• "Ynnä muuta", a Finnish phrase meaning roughly "and the others" or "etc."