Operating and Control Console 
Office of the Comptroller of the Curre… 
Options Clearing Corporation 
Operations Control Center 
Optical Channel Carrier 
Output Circuit Check 
Office of Chief Counsel 
Office of Corporate Communications 
Other Common Carrier 
Operations Control Centre 
Other Common Carriers 
Oakland Community College 
Office of Contract Compliance 
Onondaga Community College 
Operational Computer Complex 
Optical Call Controller 
occasionally connected computing 
Occidental Chemical Corporation 
Occulting 
Occupancy 
occupation 
Oil Coordination Committee 
Old Corrugated Container 
Operations Computer Center 
Optical Cross-Connect 
Option Clearing Corporation 
Oakland County College 
Oakton Community College 
occasional 
occasionally