An acronym is an abbreviation of the first letters of a phrase or the long name of an organization that forms a word or conveys a message. In electronic communication or online documents, acronyms are used as writing shorthand or a method to communicate humor. Below, you will find an alphabetical listing for hundreds of computer related acronyms. 

[A][B][C][D][E][F][G][H][I][J][K][L][M][N][O][P][Q][R][S][T][U][V][W][XYZ]

[I]

IBASES - Intel Baseline AGP System Evaluation Suite
IBM - International Business Machine
IBMR - Image Based Method Rendering
IA-64 Intel Architecture 64bit
IAB - Internet Architecture Board
IANA - International Article Numbering Association
IANA - Internet Assigned Numbers Authority
IC - Integrated Circuit
ICAS - International Campaign of Abandonware Supporters
ICB - Image Capture Board
ICB - Intel Code Builder
ICD - Installable Client Driver
ICL - Iob Control Language
ICMP - Internet Control Message Protocol
ICQ - [I SeeK you]
ICS - Internet Caching System
ICU - ISA Configuration Utility
ICW - Internet Connection Wizard
ID - IDentification
IDAPI - Independent Database Application Programming Interface
IDC - International Data Corporation
IDE - Integrated Developement Environment
IDE - Integrated Device Electronic
IDEA - International Data Encryption Algorithm
IDL - Interface Description Language
IDPR - Inter-Domain Policy Routing protocol
IDPR-CMTP - IDPR Control Message Transport Protocol
IDRP - Inter-Domain Routing Protocol
IDS - Identification of Digitized Roads
IDSA - Interactive Digital Software Association
IDT - Integrated Device Technology
IEAK - Internet Explorer Administration Kit
IEC - International Electrotechnical Commission
IEEE - Institute of Electrical and Electronics Engineers
IESG - steering group of Internet Engineering Task Force
IETF - Internet Engineering Task Force
IFM - Intelligent Flow Management
IFMA - International Facility Management Association
IGBT - Insulated Gate Bipolar Transistor
IGDT - Inert Gas Discharge Tube
IGP - any private Interior Gateway Protocol
IHS - Integrated Heat Spreader
IHV - Independent Hardware Vendor
IIC - Inter IC Bus
IID - Interaural Intensity Difference
IIF - Informix Internet Foundation
IIOP - Internet InterORB Protocol
IIR - Infinite Impulse Response
IIS - Internet Information Server
IIT - Integrated Information Technology
ILS - International Lyrics Server
IKE - Internet Key Exchange
IM-BUS - InterMetal-Bus
IMAP3 - Interactive Mail Access Protocol v3
IMB - InterModule Bus
IMSI - International Mobile Subscriber Identification
IMSP - Interactive Mail Support Protocol
IN - Intelligent Network
INTEL - INTegrated ELectronic
INTERNET - INTERnational NETwork
IO - Input/Output
IOC - IBM Open Classes
IOL - Internet OnLine
IORQ - Input/Output ReQuest
IPC - Inter-Process Communication
IPCU - Internet Packet Core Utility
IPEAK - Intel Performance Evaluation and Analysis Kit
IPI - Internal Processor Interrupt
IPIP - IP-within-IP encapsulation protocol
IPL - Initial Program Load
IPN - InterPlanetary Network
IPNRG - Interplanetary Internet Research Group
IPPC - Internet Pluribus Packet Core
IPS - Intelligent Power Switch
IPsec - Internet Protocol Security
IPX - Internetwork Packet eXchange
IQ - Intelligence Quotient
IR - InfraRed
IRC - Internet Relay Chat
IrDA - Infrared Data Association
IRP - I/O Request Packed
IRQ - Interrupt ReQuest
IRTP - Internet Reliable Transaction Protocol
ISA - Industry Standard Architecture
ISA - Instruction Set Architecture
ISI - Information Sciences Institute
ISM - Integrated Switch Module
ISO-TP4 - ISO Transport Protocol class 4
ISP - Internet Service Provider
ISS - Integrated System Services
ISS - International Space System
ISSCC - International Solid-State Circuits Conference
IT - Information Technology
ITAA - International Technology Association of America
ITD - Interaural Time Difference
ITT - International Telephone and Telegraph
ITU-TSS - International Telecommunications Union-Telecommunication Standards Sector
ISO - International Standard Organization
ISO-IP - ISO Internet Protocol
ISA - Industry Standard Architecture
ISA - Instruction Set Architecture
ISDN - Integrated Services Digital Network
ISM - Input Switch Matrix
ISSI - Integrated Silicon Solution, Inc.
ITU - International Telecommunications Union
IVBC - Intel Video Business Conferencing
IVC - Integrated Visual Computing
IWU - Inter Working Unit
IXP - Image processing eXternal Process