| IRICE |
Integrated Remote Interface Control Element |
| IRIG |
Interrange Instrumentation Group |
| IRIS |
Intelligent Reference Information System |
| IRIS |
Interregional Information Society Initiative |
| IRL |
Inter Repeater Link |
| IRL |
Irland |
| IRLED |
Infrared Light Emitting Diode |
| IRM |
Information Rights/Resource Management |
| IRMA |
Immissionsraten-Messapparatur |
| IRMM |
Institut für Referenzmaterialien und -messungen |
| IRO |
International Refugee Organization |
| IRPTC |
International Register of Potentially Toxic Chemicals |
| IRQ |
Information/Interrupt Request |
| IRQ |
Irak |
| IRR |
Information Request Response |
| IRR |
Internet Routing Registry |
| IRS |
Intrusion Response System |
| IRS |
Interchange Record Separator |
| IRS |
Internal Revenue Service |
| IRS |
Information Retrieval System |
| IRS |
InnenRaumSchutz |
| IRSG |
Internet Research Steering Group |
| IRT |
Institut für Rundfunktechnik, München |
| IRTF |
Internet Research Task Force |
| IRV |
International Reference Version |
| IRÜ |
InnenRaumÜberwachung |
| IS |
In Service |
| IS |
Information Separator/Sevices/System |
| IS |
Integrated Service |
| IS |
Intensity Stereo |
| IS |
Island |
| IS |
Intermediate System |
| IS |
International Standard (ISO) |
| IS |
Interrupt Status |
| iS |
in Sachen |
| IS |
Interactive Service (Telecommunication) |
| ISA |
Intelligent Speed Adaption |
| ISA |
Interactive Services Association |
| ISA |
Instruction Set Architecture |
| ISA |
Internet Security and Acceleration (Server) |
| ISA |
Industry Standard Architecture |
| ISA |
Integrated Services Architecture |
| ISA |
Informationssystem Stoffe und Anlagen der Immissionsschutzverwaltung NRW |
| ISAD |
Integrierter Starter Alternator Dämpfer |
| ISAKMP |
Internet Security Association Key Management Protocol |
| ISAL |
Informationssystem Altlasten |
| ISAM |
Index/Indexed Sequential Access Method |
| ISAPI |
Internet Server API |
| ISBD |
International Standard Bibliographic Description |
| ISBN |
internationale Standardbuchnummer |