DA
DA might be an acronym or abbreviation for:
- Dalton (Da), the atomic mass unit
- Doctor of Arts degree
- Dimensional Analysis
- U.S. District Attorney or district attorney (city), in the United States.
- Danish language, ISO 639-1 code
- Daniel Amos
- Dà is the abbreviation of:
- Dumbledore's Army in Harry Potter and the Order of the Phoenix
- The character Dorothy Ann in The Magic School Bus
