IAAA I Am An Accountant

IAAD I Am A Doctor

IAAH Insert Appropriate Adjective Here

IAAL I Am A Lawyer

IAE In any event

IAFYDSTTA If at first you don't succeed, try try again

IAG Its All Good

IAGFII It's All Good Fun Isn't it

IANA I am Not A

IANAA I Am Not An Accountant

IANAC I am not a crook

IANAD I am not a Doctor

IANAL I'm Not A Lawyer

IANARS I am not a rocket scientist

IANMTU I am not making this up

IANYM In A New York Minute

IAP Internet Access Provider

IARTPFWTSIOWIM I Am Repeating This Parrot Fashion Without The Slightest Idea Of What It Means

IASA I Am So Annoyed

IAT I am Tired

IATA International Air Transport Association

IAU I adore you

IAW In Another Window

IAWC In A While Crocodile

IAWTC I agree with this comment

IAWTP I Agree With This Post

IB I'm Back

IBAN International Bank Account Number

IBB I'll Be Back

IBC Inadequate But Cute

IBEG I'd Be Eternally Grateful

IBFY In Business For Yourself

IBM Inadequate, But Marketable

IBM International Business Machines

IBTD I beg to differ

IBTL In Before The Lock

IC I See

ICAM I Couldn't Agree More

ICANN Internet Corporation for Assigned Names and Numbers

ICAO International Civil Aviation Organization

ICB I Care Because?

ICBA I Can't Be Arsed
ICBA I Can't Be Asked

icbijst I can't believe I just saw that!

ICBM InterContinental Ballistic Missile

ICDL International Computer Drivers License

ICF Internet connection firewall

ICIHICPCL I Can't Imagine How I Could Possibly Care Less

ICL Instructions Come Later

ICMFP I Claim My Five Pounds

ICMP Internet Control Message Protocol

ICOCBW I Could Of Course Be Wrong

ICOM Inputs, outputs, controls and mechanisms

ICOs Issues , Concerns and Opportunities

ICOWHMGOWYHH I can only wonder how many glasses of wine you have had

ICQ I Seek You

ICSTIS Independent Committee for the Supervision of Standards of Telephone Information Services

ICT Information and communications technology
ICT Internal Charge Transfer

ICTYBTIHTKY I Could Tell You But Then I'd Have To Kill You

ICU2 I See You Too

icudk In case you didn't know

ICURAQT I See You Are A Cutie

ICYDK In Case You Didn't Know

ICYI In Case you're Interested

IDA I dislike acronyms

IDAFL I'd do anything for love

IDBI I Don't Believe It

IDBIST I Don't Believe I Said That

IDBYST I Don't Believe You Said That

IDC Internet data connector

IDE Integrated Development Environment
IDE Integrated Drive Electronics

IDEFO Integration Definition for Function Modeling

IDEN Integrated Digital Enhanced Network

IDGAD I don't give a damn

IDGARA I Don't Give A Rat's Arse

IDHMF I Don't Have Many Friends

IDKT I Didn't Know That

IDKWIB I Don't Know Why I Bother

IDLH I don’t love her

IDLY I don't like you

IDM Integrated Document Management
IDM It Doesn't Matter

IDM2M It Doesn't Matter To Me

Idn I don't know

IDP Intrusion, detection and prevention

IDRKHTRTWYJSSITATLI I don't really know how to respond to what you just said so I'll type all these letters instead

IDS Image Display System
IDS Intrusion Detection System
IDS Intrusion detection systems

IDST I Didn't Say That
IDST If Destroyed Still True

IDTS I don’t Think So

IDTT I'll Drink to that

ie In effect
ie Internet Explorer
ie That Is

IED Improvised Explosive Device

IEEE Institute of Electrical and Electronics Engineers

IELTS The International English Language Testing System

IETBWATE Its easy to be wise after the event

IETF Internet Engineering Task Force

IFAB I Found A Bug

IFAPIFAP In For A Penny In For A Pound

IFF If and only If

IFMNX I have ham and eggs

IGG I gotta go
IGGN I Gotta Go Now

IGMC I'll get my coat

IGP I gotta pee

IGTG I got to go

IGTP I Get The Point or I Got The Power
IGTP I Get To The Point

IHA I hate acronyms

IHAC I Haven't A Clue

IHMB I Hate My Boss

IHMO In My Humble Opinion

IHNI I Have No Idea

IHNO I have no opinion

IHS Integrated Home System

IHTBS It Has To Be Shown

IHTFP I Have Truly Found Paradise

IHTG I have to go

IHY I Hate You

IHYRND I Hope You Rot and Die

IHYUWIM I Hope You Understand What I Mean

IIABDFI If It Ain't Broke Don't Fix It

IICIW If I Could I Would

IIFES International Institute of Forensic Engineering Sciences

IIH If it helps

IIIO Intel inside, idiot outside

IIMA If I May Ask

IIMAD If It Makes A Difference

IIN Integrated Information Network
IIN Issuer Identification Number

IINM If I'm Not Mistaken

IIR If I Recall

IIT I'm Impressed Too

IITRT It Is The Right Time

IITSFOF Imitation is the sincerest form of flattery

IITUWIMIWHTKY If I Tell You What It Means, I will Have To Kill You

IITUWIMWUBMAD If I Tell You What It Means, Will You Buy Me A Drink ?

IIWM If it were me

IIWY If I were you

IIYDKIDKWD If You Don't Know I Don't Know Who Does

IJK I just know

IJLS I Just Like Saying

IJWTK I Just Want To Know

IJWTS I Just Want To Say

IKBS Intelligent Knowledge Based Systems

IKE Internet Key Exchange

IKHYF I Know How You Feel

IKJWYM I Know Just What You Mean

IKWUM I Know What yoU Mean

IKWYM I know what you mean

IKYABWAI I Know You Are, But What Am I?

IL2SUS I Like To See You Speechless

ILIC I Laughed , I Cried

ILICISCOMK I Laughed , I Cried , I Spat Coffee On My Keyboard

ILIWTPCT I Love It When The Plan Comes Together

ILN It Looks Nice
ILN It's Looking Nice

ILNY I love New York

ILSHIBAMF I Laughed So Hard I Broke All My Furniture!

ILTIC I Laughed Till I Cried!

ILTON I have left the office now

ILU I love you
ILU2 I love you too

ILUIS I Laughed Until I Stopped

ILUL I love you lots

ILUMAMED I love you more and more every day

ILUMED I love you more each day

ILUSM I love you so much

ilusmih I love yo so much it hurts

ILY I love you
ILY2 I love you too

ILYAL I Like You A Lot

ILYEAR I Love YouEverything's All Right

ILYFAE I Love You Forever And Ever

ILYL I love you lots

ILYT I love you too

im or pm – instant or private message aka whisper

IMAP Internet Mail Access Protocol

IMBL It must be love

IMBO In My Biased Opinion

IMBW I May Be Wrong

IMCAO In My Completely Arrogant Opinion

IMCDO In My Conceited Dogmatic Opinion

IMD14U I am the one for you

IMEI International Mobile Equipment Identifier

IMHBCO In My Humble But Correct Opinion

IMHO in my humble opinion

IMHP Internet Mobile Host Protocol

IMI I Mean It

IMLAO In My Lame Ass Opinion

IMMOR I Make My Own Rules

IMMSMC If My Memory Serves Me Correctly

IMNERHO In My Not Even Remotely Humble Opinion

IMNSCO In My Not So Considered Opinion

IMNSHO In My Not-So-Humble Opinion

IMNSVHO In My Not So Very Humble Opinion

IMO In My Opinion

IMOBO In My Own Biased Opinion

IMPE In My Personal Experience
IMPE In My Previous Experience

IMPOV In My Point Of View

IMRRLNTOIMUO In My Real Real Life Not The One I Made Up Online

IMSMC If Memory Serves Me Correctly

IMV Instant Messenger enVironment

IMVHO In My Very Humble Opinion

IMXO In My Expert Opinion

IMY I Miss You

INAL I'm Not A Lawyer

INFP Introverted iNtuitive Feeling Perceiving

ingres Interactive graphics retrieval system

INGSI I'm Not Gonna Say It

INGTSI I'm Not Going To Say It

INL I'm Not Laughing

INMP Its not my problem

INNW If Not Now, When

INPO In no particular order

INST I Never Said That

Interpol International Criminal Police Organization

INUIM It is not you it is me

INY I need you

IO Input/Output

ioeaoto In one ear and out the other

IOHO In Our Humble Opinion

IOKIYAR It's OK if you're a Republican

IOL Information Over Load

IOTD Image of the day

IOTY It’s Over To You

IOU I Owe You

IOWTBT I Only Want To Be Told

IPN Instant Payment Notification

IPO Initial Public Offering
IPO Internal Purchase Order

IPP Internet Printing Protocol

IPSE Integrated Project Support Environment

IPsec Internet Protocol Security

IPSS International Prostate Symptom Score

IPT Internet Protocol Telephony
IPT IP Telephony

IPTV Internet Protocol Television

IQ Intellectual quotients

IR Infra Red
IR Inter Racial

IRA Irish Republican Army

IRC Internet relay chat

IRDA Infrared data association

IRL in “real” life

IRLY I really love you

IRMC I Rest My Case

IRMFI I Reply Merely For Information

IRMY I Really Miss You

IROI Immediate return on investment

IROOC Idiot Right Out Of College
IROOC I've Run Out Of Cigarettes

IRR Internal Rate of Return

IRS Inland revenue service

IRT In real time
IRT In regards to

IRV Immediate response vehicle

IRW In Real World

ISAGN I See A Great Need

ISAPI Internet Server Application Program Interface

ISBAB I Should have Bought A Book

ISBN International Standard Book Number

ISBT It's Strange But True

ISC I Stand Corrected

iSCSI Internet Small Computer System Interface

ISDN Integrated Service Digital Network

ISFJ Introverted, Sensing, Feeling and Judging

ISHBAB I Should Have Bought A Book

ISI Institute for Scientific Information

ISIANMTU I Swear I Am Not Making This Up

ISIHAC I'm Sorry I Haven't A Clue

ISO In search of
ISO International Organization for Standardization

ISP Internet Service Provider

ISQ I seek you

ISSN International Standard Serial Number

ISTM It seems to me

ISTR I seem to recall
ISTR I Seem To Remember

ISV Independent Software Vendor

ISWYM I See What You Mean

IT Information Technology

IT&T Information technology and telecommunications

ITA I Totally Agree
ITA If that is alright
ITA Income Tax Act

ITAFAQ? Is That A Fact?

ITAH Is There Anybody Here

ITAK It Takes All Kinds

ITALY I truly always love you
ITALY I Trust And Love You

ITC Its the coolist

ITCFWI If The Cap Fits Wear It

ITEOTWAWKI It's The End Of The World As We Know It

ITFA In The Final Analysis

ITIL IT Infrastructure Library

ITILY I Think I Love You

ITIOC In The Interest Of Consistency

ITLSTBTCB It's the last straw that breaks the camel's back

ITMA Its That Man Again

itmohe If the monitor only had eyes

ITOT Transport Service on top of TCP

ITRO In The Reality Of
ITRO In The Region Of

ITRW In The Real World

ITSFWI If The Shoe Fits, Wear It

ITSK I Thought She Knew

ITSM IT Service Management

ITT In This Thread

ITUS I Told You So

iTV Interactive Television
ITVs Interactive TVs

ITWSBT I Think We Should Be Told

ITYS I Think You Stink
ITYS I Told You So

ITYWF I Think You Will Find

IU2LuvU I Used To Love You

IU2LuvUBIAON I used to love you but it's all over now

IU2U It's Up To You

IUD Insert Usual Disclaimers
IUD Inter Uterine Device

IURD In Your Dreams

IUSS If You Say So

IUSWIM If You See What I Mean

IUT Institute of Technology

IUTHALORFH I Used To Have A Lot Of Respect For Her / Him

IUTKATS I Used To Know All That Stuff

IUTY It's up to you

IV Intra-venous

IVF In Vitro Fertilisation

IVL In Virtual Life

IVR Interactive Voice Response
IVR In Virtual Reality

IWALU I will always love you

IWBIWISI I Will Believe It When I See It

IWBN It Would Be Nice

IWBN(I) It Would Be Nice (If)

IWBS I Was Being Stupid

IWIAAIWIN I Want It All, and I Want It Now

IWIK I wish I knew

IWIYW I Will If You Will
IWIYW? If I Will You Will?

iwlyfae I will Love You Forever And Ever

IWM It wasn’t me

IWMY I Will Miss You

IWSTY It would seem to you

IWTKY I want to kill you

IWTTY I Want To Tell You

IWWH,BWR If wishes were horses, beggars would ride

IWYB I Want You Back

IWYG Is What You Get

IWYINYILY I want you , I need you, I love you

IWYWH I Wish You Were Here

IYD in your dreams

IYDK If You Didn't Know

IYDKIDNWD If you don't know, I don't know who does

IYDMMA If you don't mind me asking

IYFEG Insert Your Favorite Ethnic Group

IYGIFI If You've Got It Flaunt It

IYKWIM If You Know What I Mean

IYKWIMAITYD If you know what I mean, and I think you do

IYL If You Like

IYO In Your Opinion

IYSWIM If You See What I Mean

IYTS If You Think So

IYW If You Wish

IYWAWDDIY If you want anything well done, do it yourself