OCR

OCR may refer to:

Science and technology

 * Optical character recognition, conversion of images of text into characters
 * Organically moderated and cooled reactor, a type of nuclear reactor
 * Oxidizable carbon ratio dating, a method of absolute dating
 * Transvaginal oocyte retrieval, a technique used in vitro fertilization
 * Oil control ring, a piston ring
 * Over consolidation ratio, a consolidation measurement in geotechnical engineering

Offices of civil rights

 * Office for Civil Rights, U.S. Department of Education
 * State Office of Civil Rights, United States Department of State
 * GSA Office of Civil Rights, General Services Administration
 * HHS Office for Civil Rights, United States Department of Health and Human Services
 * DOJ Office for Civil Rights, Office of Justice Programs

Economics

 * Official cash rate, the interest rate paid by banks in the overnight money market
 * Optimum currency region, a theoretical optimal area where one currency would make most benefit

Other uses

 * Original cast recording, a recording of a stage musical featuring the show's original cast
 * Otago Central Railway, now a heritage railway in Otago, New Zealand
 * Ottawa Central Railway a Canadian Shortline owned by CN Rail
 * OverClocked ReMix, an organization and website dedicated to preserving and paying tribute to video game music through re-orchestration and reinterpretation
 * Oxford, Cambridge and RSA Examinations, an exam board in England, Wales and Northern Ireland
 * Obstacle course racing