The Rolling Stones

Tip ring sleeve connector, also known as the Jack plug.

Timing Reference Signal, a timing signal used in Serial Digital Interface video transmission

Tandy/Radio Shack

AirTran Airways, a low cost airline based in Orlando, Florida

Telecommunications Relay Service, also known as Telephone Relay Service

Trainz Railroad Simulator

Trunked Radio Systems

The Totally Rad Show, a podcast

Term Rewriting System

The Rocket Summer, an indie, soul, Christian band from the Dallas/Ft. Worth, texas area

True Symphonic Rockestra

Total return swap

Common-mode rejection ratio

Telangana Rashtra Samithi, a political party in the Indian state of Andhra Pradesh

ThalesRaytheonSystems, a manufacturer of radar and communications gear

Tough Rubber Sheath

IATA airport code for Friuli Venezia Giulia Airport (Trieste)