• Information technology
• Driving Safety Alerting,a device or developing platform for navigation
• Digital Signature Algorithm
• Directory System Agent, part of X.500
• Dynamic Storage Allocation, a frequent synonym for Dynamic

Memory Allocation

• Distributed Systems Architecture, the proprietary network architecture of Groupe Bull
• Detect, see, avoid, an aircraft anti-collision technology program, part of the NASA ERAST Project.

• Democratic Socialists of America, the largest socialist organization in America
• Division of the State Architect, reviews plans for public school construction and certain other state funder projects in the state of California
• Driving Standards Agency, an Executive Agency of the British Department for Transport
• Denver School of the Arts, a grades 6-12 public school in Denver, CO where students audition in 12 major arts areas.
• DeKalb School of the Arts, a grades 8-12 public school in an Atlanta, GA.
• DSA Myanmar, Defense Services Academy
• Durham School of the Arts, a grades 6-12 public school in Durham, NC.
• German School of Athens, also known as "Deutsche Schule Athen"
• Department of Social Affairs of the fictional British Government from the television comedy satire The Thick of It
• Debating SA Incorporated, a South Australian organisation that conducts debating activities.

• Direct Selling Association, Direct Selling Association (UK)

• Digital subtraction angiography

• Robin Hood Airport Doncaster Sheffield, IATA airport code

• Deducting Search Algorithm, Mathematical Algorithm to determine shortest route to information
• Das Schwarze Auge, the original German title of the adventure role-playing game The Dark Eye
• Deadstar Assembly, an Industrial Metal band from Fort Lauderdale, Florida.
• Disabled students allowance, a UK government grant for disabled students in higher education.
• Distinguished Service Award, Order of the Arrow, Boy Scouts of America