DSA or Dsa may refer to:
Education
- Detroit School of Arts, a grades 9–12 public school in the United States
- DeKalb School of the Arts, a grades 8–12 public school in the United States
- Denver School of the Arts, a grades 6–12 public school in the United States
- Durham School of the Arts, a grades 6–12 public school in the United States
- , a German school in Portugal
- , the German School of Athens, Greece
- Direct School Admission, Singapore
- Disabled Students' Allowance, a UK government grant for students in higher education
Information technology
- Digital Signature Algorithm, a cryptographic standard for digital signatures
- Directory System Agent, an IT standard, part of X.500
- Domain-Specific Architecture; see Pixel Visual Core
- Debian Security Advisory, security advisories for the Debian Linux operating system
- Data structure alignment, in computer memory
- Data structures and algorithms
- Dynamic storage allocation, runtime reservation of address space from the free store
Organizations
- Democratic Socialists of America, a political organization in the United States
- Dante Society of America, an academic society in the United States promoting the study of Dante Alighieri
- Direct Selling Association, a U.S.-based national trade association
- Defence Safety Authority, United Kingdom
- Development Studies Association, United Kingdom and Ireland
- Down's Syndrome Association, a British charity
- Driving Standards Agency, United Kingdom
- DSA Myanmar, the Defense Services Academy
- The Dozenal Society of America, an advocacy group for the use of a base-12 numeral system
Other uses
- Daily Subsistence Allowance, a for UNDP staff
- , a role-playing game
- Deep Synoptic Array, a radio telescope under construction in Nevada, United States
- Digital Security Act, 2018 (Bangladesh)
- Digital Services Act, a European Union regulation on digital content
- Digital subtraction angiography, a fluoroscopy technique
- Mixed metal oxide electrode, dimensionally stable anodes in electrolysis
- Distinguished Service Award (OA), Order of the Arrow, Boy Scouts of America
- Donor-specific antibody, in transplant medicine
- Dsa, a rare variant of the humid continental climate with hot, dry summers and cold, wet/snowy winters
- Dubai–Sharjah–Ajman, a conurbation of emirates in the UAE
- Duluth, South Shore and Atlantic Railway, a former railway company
- Doncaster Sheffield Airport, England (IATA code: DSA)