RTS

RTS is a three-letter abbreviation that may refer to:
* Rape Trauma Syndrome
* Real-time strategy, a gaming genre
* Reclaim the Streets, an anarchist organization
* Reformed Theological Seminary, a theological seminary in the United States
* Return to Sender
* Ronald Reagan Ballistic Missile Defense Test Site, also known as the "Reagan Test Site"
* Rett syndrome

In economics:
* Returns to scale, an economics concept
* Russian Trading System, a stock exchange in Russia

In transportation:
* Rapid Transit Series, a long running bus model originally manufactured by General Motors Corporation
* Regional Transit Service, a division of the Rochester-Genesee Regional Transportation Authority
* Regional Transit System, a bus system serving Gainesville, Florida and the University of Florida

In radio and television:
* Royal Television Society, a UK-based society for the discussion of television
* Radiodiffusion Télévision Sénégalaise, the Senegalese national broadcasting company
* Radio Television of Serbia, the national broadcasting company of Serbia
* Radio & Television of Singapore, a former name of MediaCorp Singapore
* RTS, the callsign of a TV station in Loxton, South Australia

In technology:
* Ready-To-Serve, provide services to end users.
* Return statement or ReTurn from Subroutine, a statement in many assembly languages and other low-level computer languages
* Run-time system, a part of some computer's runtime environment
* Radio teleswitch service, which regulates energy rates via broadcast radio in the UK
* SIGRTMIN and SIGRTMAX or Real-time signal, signals sent to computer programs for user-defined purposes
* A "Request to Send" frame in the IEEE 802.11 RTS/CTS mechanism
* A "Request to Send" signal in RS-232 communications