HK

HK:
 Hong Kong, 

 .hk, Hong Kong's country top-level domain
 Harman Kardon, a manufacturer of home and car audio equipment
 HKScan Oyj, previously Helsingin Kauppiaat Oy, now HK Ruokatalo Oy, a Finnish meat producer
 Hello Kitty, a character created by Sanrio-->
 Hexokinase