Organisations
* Rádio e Televisão de Portugal, the Portuguese public broadcasting corporation * Royal Thai Police, the national police force of Thailand * RacingThePlanet, an organizer of endurance foot-races * Rally of the Togolese People, a former political party in TogoScience and technology
* Radiation treatment planning, in radiotherapy * Reinforced thermoplastic pipe, a high pressure pipe * Rapid thermal processing, in semiconductor production * Round-the-pole flying, of model aircraftComputing
* Real-time Transport Protocol, for delivering audio and video over IP networks * Reliable Transport Protocol, a Cisco protocol used by Enhanced Interior Gateway Routing Protocol * Rendezvous and Termination Protocol, part of the PARC internetwork protocol suiteOther uses
* Recreational Trails Program, in the United States * Red de Transporte de Pasajeros, in Mexico City, Mexico * Regional Transportation Plan, in the United States * Registered Teacher Programme, in England and Wales * Research Triangle Park, North Carolina, United States * Reserve Tranche Position, with the International Monetary Fund * Ragam Thanam Pallavi, a kind of Carnatic music performanceSee also
* RTMP (disambiguation) {{Disambiguation.svg.html){kind=link}