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YK (or yk) may refer to:


  • Yellowknife, Northwest Territories, the capital of the Northwest Territories of Canada
  • Yogyakarta, a special region/province in Indonesia
  • Yukon, a territory in Canada (with any casing, within internet TLD .CA, and as YK for an unofficial postal abbreviation)

In business:

Other uses:

  • Yom Kippur, a Jewish Day of Atonement
  • Yottakelvin, a measure of temperature equal to 1 septillion kelvin, or 1000000000000000000000000°K