Operator Control Language (AD)
Optical Communications Linkage (AD)
Callan Marine LLC, Portsmouth, NH - Manufacturer code for watercraft hull identification number (USCG)
Object Constraint Language (VLIE)
Obstacle Clearance Limit (SAUS)
Obstruction Clearance Limit - Aviation (PIPO)
Occasional - Telegraphy (PCTE)
Ocean Cargo Line (AD)
Ocellus
Office of Congressional Liaison - Environmental Protection Agency (GFGA)
Offshore Commercial Loan
Oil City Lubricants Ltd. - Vancouver Stock Exchange symbol
Old Light Cruiser - Navy symbol
Ontario Community Literacy (OGA)
Operating Control Language - Computer science (VLIE)
Operational Check List (MUGU)
Operational Control Level
Operation Control Language - Computer programming
Operators Control Language - Computer science (BUR)
Oral Colonic Lavage - Medicine (RAWO)
Ordnance Circular Letter
Organochlorine - Also, OC - Organic chemistry
Orthopedic Casting Laboratory (DAVI)
OS/2 inside Class Library (SAUS)
Other Carrier Liability - Insurance (MHCS)
Ottumwa Connecting Line - Federal Railroad Administration identification code
Outer Compass Locator - Aviation (LDOE)
Outgoing Correspondence Log (AAG)
Output Capacitorless (SAUS)
Output Capacity Loading - Computer science (ELAL)
Overall Cartridge Length (SAUS)
Overall Connection Loss - Telecommunications (TEL)
Overcorrected Lens (SAUS)
Overhaul Cycle Limit
Over-Night Cargo Ltd. - Nigeria - ICAO designator (FAAC)
Overseas Container Line (AD)
Overseas Containers Ltd. (AD)
Overseas Currency Loan
Cleveland Public Library (SAUS)