ONC

ONC may refer to:

Places

 * Old North Church, Boston, US
 * Old North Church (Sierra Madre, California), US

Science and technology

 * Ocean Networks Canada, a University of Victoria initiative
 * Octanitrocubane, an explosive
 * Oncidium (Onc.), an orchid genus
 * Open Network Computing, a remote procedure call system
 * Operational Navigation Chart, the basis of the Digital Chart of the World
 * Ordinary National Certificate
 * Orthopaedic Nurse Certified

Organizations

 * Office of the National Coordinator for Health Information Technology
 * Oficiul Naţional Cinematografic, an agency in Romanian cinema
 * Olivet Nazarene College or Olivet Nazarene University