TRR

'''TRR''' may refer to:

* Society for Family Development ({{langx|pl|Towarzystwo Rozwoju Rodziny|links=no}}), a Polish organization * Target row refresh, a computer hardware feature used to prevent the row hammer effect in DDR4 memory * Taushiro language (ISO 639: trr), 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 * {{lang|fr|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 (reporting mark TRR), a former railroad that operated in New Jersey, United States * Tulsa Rig, Reel, and Manufacturing Company, a predecessor company of Flintco * China Bay Airport (IATA: TRR), near Trincomalee, Sri Lanka * Tormenta Rampaging Run, an upcoming steel roller coaster expected to open in 2026 at Six Flags Over Texas

{{Disambiguation}}