What does CKO stand for?

Anufo - Language code (ETLW)

Checking Operation (SAUS)

Checking Operator (SAUS)

Check Operator (DEN)

Chief Knowledge Officer

Clark Oil & Refining Corp. (SAUO)

Consolidated Knobby Lake Mines Ltd. - Vancouver Stock Exchange symbol

Cornelio Procopio - Brazil - Airport symbol (OAG)

Country Craft, Orting, WA - Manufacturer code for watercraft hull identification number (USCG)