| IR |
Infrared, Infrarot |
| IR |
Information Request/Retrieval |
| IR |
Internet Registry |
| IRAC |
Indpendent Review Advisory Committee |
| IRAF |
Image Reduction and Analysis Facility |
| IRB |
Instrumentation Request Broker |
| IRB |
Instruction Recoder Buffer |
| IRC |
International Record Carrier |
| IRC |
International Reply Coupon |
| IRC |
Internet Relay Chat |
| IRD |
Internet Resource Directory |
| IRD |
Integrated Receiver Decoder (TV) |
| IRDA |
Infrared Data Association |
| IRDS |
Information Resources Dictionary System |
| IRG |
Implicit Regeneration |
| IRICE |
Integrated Remote Interface Control Element |
| IRIG |
Interrange Instrumentation Group |
| IRIS |
Intelligent Reference Information System |
| IRIS |
Interregional Information Society Initiative |
| IRL |
Inter Repeater Link |
| IRLED |
Infrared Light Emitting Diode |
| IRM |
Information Rights/Resource Management |
| IRQ |
Information/Interrupt Request |
| IRR |
Information Request Response |
| IRR |
Internet Routing Registry |
| IRS |
Internal Revenue Service |
| IRS |
Interchange Record Separator |
| IRS |
Information Retrieval System |
| IRS |
Intrusion Response System |
| IRSG |
Internet Research Steering Group |
| IRT |
Institut für Rundfunktechnik, München |
| IRTF |
Internet Research Task Force |
| IRV |
International Reference Version |
| IS |
Interrupt Status |
| IS |
International Standard (ISO) |
| IS |
Interactive Service (Telecommunication) |
| IS |
Intensity Stereo |
| IS |
Integrated Service |
| IS |
Information Separator/Sevices/System |
| IS |
In Service |
| IS |
Intermediate System |
| ISA |
Interactive Services Association |
| ISA |
Industry Standard Architecture |
| ISA |
Instruction Set Architecture |
| ISA |
Internet Security and Acceleration (Server) |
| ISA |
Integrated Services Architecture |
| ISAKMP |
Internet Security Association Key Management Protocol |
| ISAM |
Index/Indexed Sequential Access Method |
| ISAPI |
Internet Server API |
| ISBD |
International Standard Bibliographic Description |