• Occupied Palestinian Territories, an alternative name for the State of
Palestine •
Ocean Power Technologies, a US owned renewable energy company •
Office des postes et télécommunications, especially in French Polynesia (
Office des postes et télécommunications de Polynésie française) and in New Caledonia •
Operation Prime Time, a consortium of TV Stations to provide alternative prime time programming •
Optical projection tomography, a form of tomographic tissue imaging used in biomedical research •
Optional Practical Training, a period during which university students with an F-1 are permitted by the United States Citizenship and Immigration Services (USCIS) to work for one year on a student visa • Optimized Production Technology, a production planning system created by
Eliyahu M. Goldratt • Outdoor Payment Terminal, a name sometimes used for the self-service user interface hardware at
fuel stations •
Oral pressure therapy, a treatment for obstructive sleep apnea •
Overseas Passenger Terminal, Sydney • Obshchestvennoye Rossiyskoye Televideniye (, ОРТ in Cyrillic script), the former name of
Channel One Russia, a public broadcaster in Russia •
Oxford Placement Test •
Onboard Performance Tool, aviation device for landing calculations based on weather and runway conditions == See also ==