TRR may refer to:Society for Family Development, a Polish organization Target row refresh, a computer hardware feature used to prevent the row hammer effect in DDR4 memory Taushiro language, a language isolate of the Peruvian Amazon Tehran Research Reactor, an Iranian nuclear research reactor, supplied by the U.S. in 1960 Thai Roong Ruang, a sugar producer Three Rivers Review, a literary magazine published by the University of Pittsburgh Tom Rhodes Radio, an interview podcast TRR is the station code for Torre railway station in Devon, England Trottoir roulant rapide, a moving walkway in the Montparnasse–Bienvenüe Metro station, France Trusted Recursive Resolver, a DNS-resolving server operated by Mozilla for using DNS over HTTPS in the Firefox web browser Tuckerton Railroad, a former railroad that operated in New Jersey, United States Tulsa Rig, Reel, and Manufacturing Company, a predecessor company of Flintco China Bay Airport, near Trincomalee, Sri Lanka Tormenta Rampaging Run, an upcoming steel roller coaster expected to open in 2026 at Six Flags Over Texas