title: OCN
text: # OCN
  
  OCN is a three letter abbreviation that stands for:
  
  * OCLC Control Number, a bibliographic record identifier
  * In Oncology nursing, an Oncology Certified Nurse
  * Opaskwayak Cree Nation
  * Open College Network, a UK education organisation today known as NOCN
  * Open Computer Network, a major Internet Service Provider in Japan
  * Orange County Newschannel, a defunct cable television news network targeted toward Orange County, California
  * Original Camera Negative, the film stock used in a movie camera
  * Orion Cinema Network, a Korean cinema network by On-Media
  * Orthodox Christian Network
  * Originally called number, in telephony, the phone number of the originally called party, regardless of call redirection; look inside a Signalling System No. 7 (SS7) ISDN User Part (IUP) initial address message (IAM) for this optional parameter
  * Operating Company Number, in telephony, a code used in various iconectiv telephony products, a major subset of which equate to Company Codes assigned by the National Exchange Carrier Association (NECA) to telecommunications carriers (including landline, wireless carriers, and resellers of various types).
  * Order confirmation number, a method for recording purchase orders in many Enterprise resource planning (ERP) systems
  
  OCN may also refer to:
  
  * The chemical formula for a cyanate ion
  * The NYSE Symbol for Ocwen Financial Corporation
  * The IATA airport code for Oceanside Municipal Airport
  