Business
* Recherche et Industrie Thérapeutiques, the former name of what is now GlaxoSmithKline Biologicals in Belgium * Rede Internacional de Televisão, a Brazilian religious television channel * RiT Technologies, a company specializing in structured cabling management systems * Rothschild Investment Trust, now RIT Capital Partners, a large British investment trust * Rit Dye, a household clothing dye manufactured by Phoenix BrandsEducation
* Rajalakshmi Institute of Technology, a college in Tamil Nadu, India * Rajiv Gandhi Institute of Technology, Kottayam * Rourkela Institute of Technology, Kalunga, Orissa, India * Royal Institute of Thailand, the office of Royal Society of Thailand *Medicine
* Radioimmunotherapy, radioisotope therapy with monoclonal antibodies * Radioisotope therapy, a form of radiation therapy * Rit (protein), a member of the ras superfamily of proteinsMusic
* Recording Industry Foundation in Taiwan, the organization representing the music industry in Taiwan * ''Rit'' (album), a 1981 album by Lee Ritenour * '' Rit's House'', a 2002 album by Lee Ritenour * ''rit.'', abbreviation for '' ritardando'' or ''ritenuto''Transit
* Rede Integrada de Transporte, a bus rapid transit system in Curitiba, Brazil * Riffelalp tram (RiT), a mountain tram line near Zermatt, Switzerland * Roosevelt Island Tramway, a tram connecting Manhattan and Roosevelt Island in New York CityPlaces
* Rit, Croatia, a village near Lukač * Kopački Rit, a nature park in eastern Croatia * Jabučki Rit, a suburb of Belgrade, Serbia * Glogonjski Rit, a suburb of Belgrade, SerbiaOther uses
* Rapid intervention team, firefighter assist and search teamSee also
* Ritt * Reet (disambiguation) * Writ (disambiguation) {{disambiguation