What does COK stand for?

Ciskei International Airways Corp. - South Africa - ICAO designator (FAAC)

Cochin - India - Airport symbol (OAG)

Cook Islands - ANSI three-letter standard code (CNC)

Cook Paint & Varnish Co (SAUO)

Cous Creek Copper Mines - Vancouver Stock Exchange symbol

C. S. Boat Works, Marco Island, FL - Manufacturer code for watercraft hull identification number (USCG)

Santa Teresa Cora - Language code (ETLW)