- IAAA
- I Am An Accountant
- IAAL
- I Am A Lawyer
- IAC
- In Any Case
- IAE
- In Any Event
- IANAA
- I Am Not An Accountant
- IANAC
- I Am Not A Crook
- IANAL
- I Am Not A Lawyer
- IANALBIPOOTV
- I Am Not A Lawyer, But I Play One On TV
- IANYM
- In A New York Minute
- IARTPFWTSIOWIM
- I Am Repeating This Parrot-Fashion Without The Slightest Idea Of What It Means.
- IASH
- I Am So Horny
- IBC
- Inadequate, But Cute
- IBM
- Inadequate, but Marketable
- IC
- I see (C)
- ICB
- I Care Because?
- ICBM
- InterContinental Ballistic Missile
- ICIHICPCL
- I Can't Imagine How I Could Possibly Care Less
- ICTYBTIHTKY
- I Could Tell You But Then I'd Have To Kill You
- ICUR
- I see (C) You Are
- IDGAD
- I Don't Give A Damn
- IDGAS
- I Don't Give A Shit
- IDGI
- I Don't Get It
- IDK
- I Don't Know
- IDTS
- I Don't Think So
- IDTT
- I'll Drink To That!
- IHATCFYB
- I Have A Terrible Craving For Your Body!
- IHTBS
- It Has To Be Shown
- IHTFP
- I Hate This Fucking Place; I Have Truly Found Paradise
- IIABDFI
- If It Ain't Broke, Don't Fix It
- IIRC
- If I Recall/Remember Correctly
- IIRCAID
- If I Recal Correctly And I Do
- IIRR
- If I Recall Rightly
- IITYWIMIWHTKY
- If I Tell You What It Means, I Will Have To Kill You
- IITYWIMWYBMAD
- If I Tell You What It Means, Will You Buy Me A Drink?
- IITYWTMWYKM
- If I Tell You What This Means Will You Kiss Me?
- IITYWYBAD
- If I Tell You, Will You Buy Another Drink?
- IITYWYBMAB
- If I Tell You, Will You Buy Me A Beer?
- IJLS
- I Just Like Saying
- IK
- I Know
- ILI
- I Like Ike
- ILICISCOMK
- I Laughed, I Cried, I Spat Coffee/Coke/Cadmium On My Keyboard
- ILIWTPCT
- I Love It When The Plan Comes Together.
- ILSHIBAMF
- I Laughed So Hard I Broke All My Furniture!
- ILU
- I Love yoU
- ILY
- I Love You
- IMAO
- In My Arrogant Opinion
- IMBO
- In My Biased Opinion
- IMCDO
- In My Conceited Dogmatic Opinion
- IMCO
- In My Considered Opinion
- IME
- In My Experience
- IMHO
- In My Humble Opinion
- IMMOR
- I Make My Own Rules
- IMNSHO
- In My Not So Humble 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
- IMPOV
- In My Point Of View
- IMPOV
- In My Point Of View
- IMS
- I Must Say
- IMVHO
- In My Very Humble Opinion
- INGSI
- I'm Not Gonna Say It
- INPO
- In No Particular Order
- INT
- I'll Never Tell
- IOU
- I Owe yoU
- IOW
- In Other Words
- IOW
- In Other Words
- IRL
- In Real Life
- IROOC
- I've Run Out Of Cigarettes
- ISO
- In Search Of
- ISP
- Internet Service Provider
- ISTR
- I Seem To Recall/Remeber
- ITFA
- In The Final Analysis
- ITYM
- I Think You Mean
- IUTHALORFH
- I Used To Have A Lot Of Respect For Him/Her
- IUTKATS
- I Used To Know All That Stuff
- IWBNI
- It Would Be Nice If
- IWIK
- I Wish I Knew
- IWSN
- I Want Sex Now
- IYFEG
- Insert Your Favorite Ethnic Group
- IYHO
- In Your Humble Opinion
- IYKWIMAITYD
- If You Know What I Mean And I Think You Do
- IYSWIM
- If You See What I Mean
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