| Acronym | Definition |
|---|
| DA | District Attorney |
| DA | Department of the Army |
| DA | Date (assembly language ASM51 assembler control) |
| DA | Denmark |
| Da | Dalton (mass spectrometry) |
| DA | Drug Abuse |
| DA | Data Analysis |
| DA | Deviantart (online artist's community) |
| dA | deviantART, Inc. |
| DA | Disadvantage (debate) |
| DA | Dark Angel (TV show; band) |
| DA | Dopamine |
| DA | Department of Agriculture (Phillipines) |
| DA | Direct Access |
| DA | Data Acquisition |
| DA | Douglas Adams (author) |
| DA | Deka (metric prefix, 10) |
| DA | Dark Age |
| DA | Direct Action |
| DA | Devil's Advocate |
| DA | Dumb Ass |
| DA | Delta Airlines |
| DA | double agent (US DoD) |
| DA | Dartford (postcode, United Kingdom) |
| DA | Death Angel (band) |
| DA | Dan Aykroyd (actor) |
| DA | Design Automation |
| DA | Development Assistance |
| DA | Democratic Alliance (South African political party) |
| DA | Dario Argento (film director) |
| DA | Directory Assistance |
| DA | Dual Action (sander) |
| DA | Dragon Age (game) |
| DA | Don't Answer |
| DA | Design Agency (DOE) |
| DA | Decision Analysis |
| DA | Double Action |
| DA | Distribution Amplifier (audio/video production) |
| DA | Directory Access |
| DA | Database Administration |
| DA | Destination Address |
| DA | Defense Acquisition |
| DA | Algerian Dinar |
| DA | Diretorio Academico |
| DA | Groupe Danone (stock symbol) |
| DA | Dental Assistant |
| DA | Dauerauftrag (German periodical payment order) |
| DA | Delegated Authority |
| DA | Damage Assessment |
| DA | Dimensional Analysis (logical method of dosage calculation used in medicine) |
| DA | Dark Angels (Space Marine Chapter, gaming) |
| DA | Daisuke Asakura (musician) |
| DA | Dead Animal |
| DA | Diagnóstico Ambiental (Guatemala) |
| DA | Dark Arts (Harry Potter) |
| DA | Dick Around |
| DA | Desktop Administration |
| DA | Darwin Award |
| DA | Disney Adventures (magazine) |
| DA | Disk Adaptor |
| DA | Daily Allowance |
| DA | Deposit Account |
| DA | Designated Agent |
| DA | Deputy Administrator |
| DA | Desk Accessory |
| DA | Dad's Army (UK TV show) |
| DA | Directional Antenna |
| DA | Deutsche Allgemeine (German insurance) |
| DA | Design Area |
| DA | Dumbledore's Army (Harry Potter) |
| DA | Daniel Amos (band) |
| DA | Digital Analysis |
| DA | Dark Archon (Starcraft: Brood Wars game) |
| DA | Data Adapter |
| DA | Democratic Alternative (Former Yugolsav Republic of Macedonia) |
| DA | Distribution Automation |
| DA | Democrats Abroad |
| DA | Data Administration |
| DA | Design Activity |
| DA | Data Administrator |
| DA | Delayed Action |
| DA | Dark Adaptation |
| DA | Dearness Allowance (India) |
| DA | Dermatitis Atopica (Spanish: Atópic Dermatitis) |
| DA | Design Authority |
| DA | Defence Association (Harry Potter) |
| DA | Diabetes Australia |
| DA | Digital Alliance |
| DA | Doctor of Arts |
| DA | Directed Action |
| DA | Disaster Action (UK) |
| DA | Development Agent |
| DA | Dose Assessment |
| DA | Data Automation |
| DA | Decision Altitude |
| DA | Disc Area (ophthalmology) |
| DA | Distributed Arithmetic |
| DA | Disney Afternoon |
| DA | Diesel Air |
| DA | Displaced Abomasum (intestinal disease of post-partum cattle) |
| DA | Digital Anvil (software developer) |
| DA | Deflection Amplifier |
| DA | Decimal Adjust (assembly language directive) |
| DA | Data Aided |
| DA | Detroit Arsenal (Center Line, MI) |
| DA | destructive analysis |
| DA | Design Agent |
| DA | Discriminate Analysis |
| DA | Duck's Ass (drink) |
| DA | Duck's Ass (haircut) |
| DA | Dairy Australia (Southbank Victoria, Australia) |
| DA | Demand Assignment |
| DA | Docking Adapter |
| DA | Distal Arthrogryposis |
| DA | Direct Appointment (source of commission for military officers) |
| DA | Divine Aura |
| DA | Dictionary of Americanisms |
| DA | Days After Acceptance |
| DA | Drift Angle |
| DA | Dielectric Absorption |
| DA | Divisional Artillery |
| DA | Denver Academy |
| DA | Dark Anima (gaming, Final Fantasy X) |
| DA | Delicious Agony (online radio station) |
| DA | Directorate of Administration |
| DA | Dyslexia Action (UK) |
| DA | Double Amplitude |
| DA | Disclosure Authorization |
| DA | Department of Audit |
| DA | Distribution Assembly (NASA) |
| DA | Deutsches Arzneibuch |
| DA | Dilution Air |
| DA | Developing Agency |
| DA | Devotion Aura (gaming, World of Warcraft) |
| DA | Developing Activity |
| DA | Dakar Academy (Senegal) |
| DA | Descent Advisor |
| DA | Decision Agent (DMS component) |
| DA | Destructive Assay |
| DA | Dynamic Atlas |
| DA | Discrete Address |
| DA | Dissolved Acetylene |
| DA | Discontinued Availability |
| DA | Droidarena (online game) |
| DA | Damaged Article |
| DA | Diploma in Anaesthesiology |
| DA | Dalmatinska Akcija (Croatian: Dalmatian Action political party) |
| DA | Desperation Attack (gaming, Final Fantasy III) |
| DA | Defensive Average (baseball statistic for hit balls) |
| DA | Deployment Assembly (NASA) |
| DA | Decessit Anno (Latin: Died in Year, epigraphy) |
| DA | Domination Area |
| DA | Deairator |
| DA | Directorate for Administration (DIA) |
| DA | Damage Adjustment (Inventory Control) |
| Da | aerospace drift (US DoD) |
| DA | Designated Acquisition Program |
| DA | Defective Article |
| DA | Disbursements Account (shipping) |
| DA | Developmental Authority |
| DA | Dentalman Apprentice (Naval rating) |
| DA | Departure Approved |
| DA | Donuts Anonymous (FFFBI) |
| DA | Depot Availability |
| DA | Differencing Assembly |
| DA | Donor Alliance, Inc. |
| DA | Dominion Atlantic Railway Company |
| DA | Directive Authorization |
| DA | Discretionary Absence |
| DA | Dawson & Associates, LLC |
| DA | Detonation-Control Algorithm |
| DA | Degenerate Acronym (i.e., one with two letters or less) |
| DA | Aerospace trajectory drift |
| DA | Documents For/Against Acceptance |
| DA | Diesel Air Starting and Shutdown |
| DA | Development Activity/Assist |