DLS

In astronomy:

• Deep Lens Survey, an optical survey used to produce maps of the large-scale structure of the mass distribution beyond the local universe.

In chemistry and physics:

• Dynamic light scattering, a measurement for determining the size distribution of small particles.

In computer science:

• Depth-limited search, a modification of depth-first search algorithm.
• Downloadable Sounds, a music format standardized by the MIDI Manufacturers Association.

In education:

• De La Salle, the name of several educational institutions typically affiliated with the Institute of the Brothers of the Christian Schools founded by French Priest Saint Jean-Baptiste de la Salle.
• Doctor of Liberal Studies or Doctor of Library Science, postgraduate degrees.

In geography:

• Dominion Land Survey, the method used to divide most of Western Canada into one-square-mile sections for agricultural and other purposes.

In law:

• Downtown Legal Services, a student legal clinic operating in Toronto.

In military:

• The Royal Air Force Legal Branch (RAFLB), also known as the Directorate Legal Services, the uniformed "legal service provider" for the Royal Air Force of the United Kingdom.

In politics:

• Democratic Left Scotland, a political organisation in Scotland.
• Liberal Students of Denmark (Danish: Danmarks Liberale Studerende), a political student organization in Denmark.
• Disability Law Service, a legal aid organisation supporting disabled students.

In transportation:

• The IATA identifier for Columbia Gorge Regional Airport in The Dalles, Oregon.