| Acronym | Definition |
|---|
| SIDA | Swedish International Development Cooperation Agency |
| SIDA | Swedish International Development Authority |
| SIDA | Sports Information Directors Association (National Association of Intercollegiate Athletics) |
| SIDA | Security Identification Display Area (FAA) |
| SIDA | Síndrome d'Immunodeficiència Adquirida (AIDS) |
| SIDA | Secure Identification Display Area |
| SIDA | Sindh Irrigation and Drainage Authority (Pakistan) |
| SIDA | Syndrome d'Immuno-Deficience Acquis (French: Acquired Immune Deficiency Syndrome) |
| SIDA | Sindrome da Immuno-Deficienza Acquisita (Italian: Acquired Immune Deficiency Syndrome) |
| SIDA | Síndrome de Inmunodeficencia Adquirida (Spanish: Acquired Immune Deficiency Syndrome) |
| SIDA | Síndroma da Imuno-Deficiência Adquirida (Portuguese: Acquired Immune Deficiency Syndrome) |
| SIDA | Sudden Infant Death Association (Australia) |
| SIDA | Swedish International Developmental Agency |
| SIDA | Sensing, Interpreting, Deciding and Acting |