TDR

TDR may refer to:

Science and medicine

 * Telecommunications for Disaster Relief, a proposed standard
 * Time-domain reflectometry, a measuring method
 * Time-domain reflectometer, an instrument used for time-domain reflectometry
 * Radiolabeled thymidine (TdR)
 * Totally drug-resistant, the ability of a microbe to resist the effects of all known drugs

Groups and organizations

 * The Designers Republic, a former graphic design studio in England
 * Tony D'Alberto Racing, an Australian V8 Supercar motor racing team

Other

 * TDR (journal), The Drama Review, an academic journal
 * Tokyo Disney Resort, Japan
 * Interstate TDR, WWII US Navy aerial drone
 * Timeout Detection and Recovery, a feature in the Windows operating system that allows it to recover from video driver errors
 * Transferable development rights, a method for controlling land use
 * Troubled debt restructuring, a debt restructuring process
 * Total dependency ratio, ratio of dependents to workers
 * Total DramaRama, an animated series on Cartoon Network
 * Throttleable ducted rocket, a type of air-augmented rocket motor