DSL is digital subscriber line, a family of digital data transmission technologies over telephone network wires.
DSL or dsl may also refer to:
Computing Damn Small Linux, a very small Linux distribution Definitive software library, a secure information technology repository Domain-specific language, a specialized computer language
Law Data Security Law of the People's Republic of China Design Science License, a copyleft license for intellectual property
Other uses Danish Sign Language (ISO 639-3: dsl) Diagnostic Systems Laboratories, a company now part of Beckman-Coulter Dictionary of the Scots Language, an online Scots–English dictionary Discovering the Sky at the Longest Wavelengths, a lunar orbit array mission Dominican Summer League, of baseball DSL, a musical artist signed to Ed Banger Records German School Lagos (German: Deutsche Schule Lagos) "Don't Say Love", a 2023 song by Leigh-Anne