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