| Interactive Command Language | Academic & Science |
| Information and Computer Literacy | Academic & Science |
| Index To Chiropractic Literature | Academic & Science |
| Inrush Current Limiter | Academic & Science |
| Clarinda Ia | Airport Code |
| Intellicall, Inc. | Business |
| Irish Chemicals Ltd | Business |
| Item Classification Level | Business |
| Israel Chemicals Ltd | Business |
| Image Cash Letter | Business |
| Institute for Community Living | Community |
| Institute of Continued Learning | Community |
| Institute of Children's Literature | Community |
| Instruction and Curriculum Leadership | Community |
| Idaho Conservation League | Community |
| Instructional Computing Lab | Computing |
| Icon Library | Computing |
| International Common Language | Computing |
| International Computers Limited | Computing |
| Inter Cluster Link | Computing |
| Innovative Computing Laboratory | Computing |
| International Computer Laboratory | Computing |
| Intel Ice Lake | Computing |
| Internet Christian Library | Computing |
| Implantable Contact Lenses | Contact |
| Imperial College London | Educational Institute |
| Integrated Compressor Line | General |
| Innovative Concert Lighting | General |
| Indian Confused League | General |
| Interface Control Layer | General |
| Itcl Class List | General |
| I Can Localize | General |
| Impreza Club Luxembourg | General |
| Impreza Club Landau | General |
| Intake Center Line | General |
| Isuzu Company Limited | General |
| Ice Cream Lover | General |
| Intraocular Contact Lens | General |
| Implantable Collamer Lens | General |
| Israel Chemicals Limited | General |
| Implantable Collimer Lenses | General |
| Increased Case Load | General |
| International Communist League | General |
| Inter Chassis Link | General |
| Intraocular Collamer Lens | General |
| Institute Class Locator | Governmental |
| International Customary Law | Governmental |
| idiopathic CD4+ T-lymphocytopenia | Governmental |
| Institute for Church Life | Governmental |
| Institute for Continuing Learning | Governmental |
| Institute for Civic Leadership | Governmental |
| Institute for Conservation Leadership | Governmental |
| Institute for Continued Learning | Governmental |
| ICHAULI | Indian Railway Station |
| International Cars Ltd | International |
| International Consortium on Landslides | International |
| International Confederation of Labor | International |
| International Companions for Learning | International |
| International Crystal Laboratories | International |
| International Content Liquidations | International |
| International Cosplay League | International |
| Implantable Contact Lens | Medical |
| Indian Cricket League | Sports & Recreations |
| Inserted Connection Loss | Telecommunication |