A yak is a long-haired species of cattle. There are two types of yak:

• Domestic yak (Bos grunniens)

• Wild yak (Bos mutus)

Yak may also refer to:

• Yak (band), an English rock band

• YAK (cryptography) is a public-key authenticated key agreement protocol

• Yak (Thailand), a mythical ogre of the Yasha kind

• Yak (instrument), a type of flute

• "Yak", English game designer Jeff Minter

• "The Yak", Nigerian footballer Yakubu

• Yakovlev or Yak Aircraft Corporation, or numerous aircraft designed or manufactured by this company

• Rheinmetall MAN Military Vehicles YAK, an armoured transport vehicle

• Yak-B 12.7mm machine gun, a Russian .50 caliber four-barrel gatling gun

• Yak Peak, a mountain in British Columbia, Canada

• A member of a yakuza organization

• IATA airport code for Yakutat Airport in Yakutat, Alaska

Korean

약 (Revised Romanization: yak) may refer to:

• Radical 214 of Chinese characters

• Yak, also called tongso yak, one of the types of traditional Korean musical instruments

• The character 약 itself, in the Unicode block Hangul Syllables

See also

• Yacc, a computer program that generates parsers

• Yake (disambiguation)

• Yaksa (disambiguation)

• Yuck (disambiguation), various meanings, primarily as a sound of disgust