RTL-TVI and club RTL, French-language TV channels from Belgium

Republic of Timor-Leste

RTL/2 A small real-time language based on ALGOL 68, with separate compilation designed by J.G.P. Barnes of ICI in 1972 as a successor to RTL/1

Reggaeton Latino, a type of Latin music partly influenced by Reggae.

RTL is an abbreviation used in several contexts.

Run-time library, in software engineering

RTL 102.5 is a Italian radio station not owned by RTL Group.

Ride the Lightning, the second studio album released by the thrash metal band, Metallica

RTL II, also a German TV station

RTL Television, one of the main German TV stations

Super RTL, another German TV station

Realtek Semiconductor Corp., a Taiwanese company

Réseau de transport de Longueuil, a public transit carrier in the city of Longueuil, Quebec, Canada

Register Transfer Language, In programming language compilers, an intermediate representation used in the GNU Compiler Collection

Register transfer level, a design/description of digital integrated circuits in electronic design automation

RTL (French radio), a French radio station

Regent Three (Leyland), A bus operated by London Transport in the 1950s

RTL/1 A real-time language written by J.G.P. Barnes of ICI in 1971

Resistor-transistor logic, an obsolete circuit design for computer logic gates

Raster Transfer Language, the Hewlett-Packard's Raster Transfer Language.

Right-to-left writing, as applied in Arabic and Hebrew. See Bi-directional text and Writing system#Directionality.

RTL Televizija, the Croatian language TV station of the RTL Group