| IDSA | I Designed Something Awful 
| Others |
| IDSA | Illinois Directors of Student Activities
| Others |
| IDSA | Independent Double Swing Arm
| Others |
| IDSA | India Direct Selling Association
| Others |
| IDSA | Indian Defence Studies Analysis
| Others |
| IDSA | Indian Direct Sellers Association
| Others |
| IDSA | Indian Direct Selling Association
| Others |
| IDSA | Industrial Data Space Association
| Others |
| IDSA | Industrial Design Society Of America
| Others |
| IDSA | Industrial Designers Society of America
| Others |
| IDSA | Industry Design Standards and Assessments
| Others |
| IDSA | Infectious Disease Society of America
| Others |
| IDSA | Infectious Diseases Society of America
| Others |
| IDSA | Institute for Defence Studies and Analyses
| Military, Education, Institute |
| IDSA | Institute for Defense Studies and Analyses
| Others |
| IDSA | Institute for Democracy in South Africa
| Others |
| IDSA | Intend Driven Scenario Authoring
| Others |
| IDSA | Interactive Digital Software Association
| Others |
| IDSA | Interior Design Student Alliance
| Others |
| IDSA | Interior Design Student Association
| Others |
| IDSA | International Dance Sport Association
| Others |
| IDSA | International Data Spaces Association
| Others |
| IDSA | International Diplomatic Student Association
| Others |
| IDSA | International Distance Skateboard Association
| Others |
| IDSA | International Distance Skateboarding Association
| Others |
| IDSA | International Diving Schools Association
| Others |
| IDSA | Irish Deaf Sports Association
| Others |