IDS
- Boeing Integrated Defense Systems
- IBM Informix Dynamic Server
- Ideographic Description Sequence
- Incomes Data Services
- Industrial Dwellings Society
- Inspekteur der Sicherheitspolizei und des SD
- Institute of Development Studies
- Integrated Data Store
- International Distribution Services
- Internet distribution system
- Intrusion detection system
- Iterative deepening search
- Royal Mail