What does oca stand for?

Ocarina (AD)

Aeroservicios Carabobo CA (ASERCA) - Venzuela - ICAO designator (FAAC)

Campbellford Branch, Northumberland County Public Library, Ontario - Library symbol - National Library of Canada (NLC)

Carmelite Vietnamese of Our Lady of Mt. Carmel (TOCD)

Cincinnati Art Museum, Cincinnati, OH - Library symbol - Library of Congress (LCLS)

Creighton University, Alumni Library, Omaha, NE - OCLC symbol (OCLC)

Observatoire de la Cote d'Azur - France

Obsessive-Compulsive Anonymous (EA)

Obstacle Clearance Altitude - Aviation (DA)

Ocaina - Language symbol (ETLW)

Ocala, FL - Amtrak rail station code

Occasion - Telegraphy (PCTE)

Ocean Bird Inc., Warren, RI - Manufacturer code for watercraft hull identification number (USCG)

Ocean Control Authority

Oceanic Control Area - ICAO

Ocean Reef Club - Florida - Airport symbol (OAG)

Oceans and Coastal Areas

Oculocutaneous Albinism - Medicine (DAVI)

Offensive Counterair - Army (ADDR)

Office, Comptroller of the Army

Office of Competitive Assessment - Department of Commerce

Office of Computing Activities - Later, DCR - National Science Foundation

Office of Congressional Affairs - Energy Research and Development Administration

Office of Consumer Advisor - USDA

Office of Consumer Affairs - US Postal Service ombudsman

Office of the City Attorney (AD)

Office of the Community Advocate - Australian Capital Territory

Officers' Caterer - Navy - British

Off-Site Consequence Analysis - Emergency Management (EMA)

Ohio College Association (AD)

Ohio Courts of Appeals Reports - A publication (DLA)

Oil Company of Australia (AD)

Old Comrades Association - British military (DMA)

Oldsmobile Club of America (EA)

Olivopontocerebellar Atrophy - Medicine (DMAA)

Olympic Council of Asia - Hawalli, Kuwait (EAIO)

Oncovin - Vincristine Cyclophosphamide, Adriamycin - Doxorubicin - Antineoplastic drug regimen (DAVI)

Ontario Chiropractic Association (SAUS)

Ontario College of Agriculture

Ontario College of Art

Opencast Coal Act - Town planning - British

Open College of Arts - British

Open Communication Architecture (CIST)

Open Component Architecture (SAUS)

Open Content Alliance (XSAL)

Operational Control Authority - NATO

Operation Crossroads Africa (EA)

Operation of Combined Arms (SAUS)

Operations of Combined Arms (SAUS)

Oracle Certificate Associate

Oral Contraceptive Agent - Endocrinology

Orbital Carrier Aircraft - Space launch term (IGSL)

Order of the Crown in America - Later, TOCA (EA)

Oregon Corrections Association (AD)

Oregon Counseling Association (SEAT)

Organisation Combat Anarchiste - Anarchist Combat Organization - France - Political party (PPW)

Organizacion de las Cooperativas de America - Organization of the Cooperatives of America - OCA (EAIO)

Organization of Chinese Americans (EA)

Organization of the Cooperatives of America (SAUS)

Original Classification Authority (SAUS)

Orthodontic Centers of America - NYSE symbol

- The Orthodox Church of America

Osteopathic Cranial Association - Later, CA

Other Competitive Action (SAUS)

Otterhound Club of America (EA)

Output Communications Adapter (SAUS)

Outstanding Claims Advance - Insurance (AIA)

Owner Controlled Area (SAUS)

Oxychloride Cement Association - Defunct