RTI or Rti may refer to: Broadcasters Radiodiffusion Television Ivoirienne, state broadcaster of Ivory Coast Radio Taiwan International, a radio station in Taiwan Reti Televisive Italiane, an Italian broadcaster and subsidiary of Mediaset Other businesses RTI International, formerly Research Triangle Institute, a not-for-profit American research organization RTI International Metals, an American company producing titanium RTI Producciones, a Colombian television production company In science and technology In computing and telecommunications Run-time infrastructure (simulation) In medicine Reproductive tract infection Respiratory tract infection Reverse-transcriptase inhibitor, a class of antiretroviral drug Other uses in science and technology Ramp travel index, a measure of an off road vehicle articulation, ability to keep all wheels in contact with the ground over uneven terrain Rayleigh–Taylor instability, an instability of an interface between two fluids of different densities which occurs when the lighter fluid is pushing the heavier fluid referred-to-input Reflectance Transformation Imaging, a computational photographic method that can reveal hidden details about cultural or forensic artifacts Receiver Transmitter line card, in the MIDS radio communication standard Response Time Index, a measure of the thermal responsiveness of fire sprinklers Relative temperature index, UL plastic thermal-aging criteria Other uses Response to intervention, in education Right to Information Act, 2005, India Rti (Lučani), a village in Serbia Resistance to interrogation, a technique taught to soldiers