| Abbreviation | Definition |
|---|---|
| HSH | HSH Associates, Financial Publishers |
| HU | Hubbell |
| IC | ICI Corporation |
| IDNO | Independent Distribution Networks Operator |
| IFSA | Irish Foodservice Suppliers Alliance |
| IGSA | Industrial Gas Suppliers Alliance |
| IM | IMC Corporation |
| IN | Instrument Specialties |
| IR | International Resistor Corporation |
| IS | Intersil |
| ISGOTT | International Safety Guide for Oil Tankers and Terminals |
| ISN | International Suppliers Network |
| IT | Itt |
| IZ | Industrial Zone |
| J | Janco |
| JD | Johanson |
| JDER | John Deere |
| JE | John E. Fast |
| JF | JFD Electronics |
| JS | Joslyn |