| Rank | Abbreviation | Meaning |
|---|
| ***** | IATC | International Air Taxi and Charter
| |
| ***** | IATC | International Air Taxi Convention
| |
| **** | IATC | International Agri-Technology Centre Ltd
| |
| **** | IATC | Instant Access Treasure Chest
| |
| **** | IATC | Iowa Association of Track Coaches
| |
| *** | IATC | Integration, Assembly, Test and Checkout
| |
| *** | IATC | Iranian American Technology Council
| |
| *** | IATC | International Appliance Technical Conference & Exhibition
| |
| *** | IATC | Investment Advisor Training Centre
| |
| ** | IATC | Iranian Air Transport Company
| |
| ** | IATC | International Aviation Training Centre
| |
| ** | IATC | International Aviation Technical Committee
| |
| ** | IATC | Isothermal Acid-Titration Calorimetry
| |
| ** | IATC | International Art Trade Company
| |
| ** | IATC | Islamic Association of Tarrant County
| |
| ** | IATC | International Advisory Technical Council
| |
| * | IATC | International Accountancy Training Center
| |
| * | IATC | Internal Auditor Training Course
| |
| * | IATC | In All Things Charity
| |
| * | IATC | International Aid and Trade Conference
| |
| * | IATC | Interim Approval To Connect
| |
| * | IATC | International Adventure Therapy Conference
| |
| * | IATC | International Automobile and Touring Club
| |
| * | IATC | International Association of Torch Clubs, Inc
| |
| * | IATC | International Agricultural Training Centre
| |