| Abbreviation | Definition |
|---|---|
| IGS | Information Global Service |
| IGV | I Grandi Viaggi |
| IH | International Harvester |
| IHA | Illinois Hospital Association |
| IHAS | I Have A Solution, INC. |
| IHC | Independence Holding Company |
| IHC | International Hapkido Corporation |
| IHC | International Harvester Company |
| IHC | International Harvester Corp |
| IHC | International Harvester Corporation |
| IHC | Investment Holding Company |
| iHCx | Integrated Health Care Exchange |
| IHDC | Interfaith Housing Development Corp |
| IHH | In His Hands, Inc. |
| IHH | International Head Hunters |
| IHHI | Integrated Healthcare Holdings Inc |
| IHI | International Harvester Inc |
| IHM | Institute of Human Movement |
| IHOP | International House Of Pancakes |
| IHP | IHP (formerly Industrial Heating and Plumbing) Industrial, Inc. |