Manufacturers
- IBM
- Icom
- ICP International Comfort Products
- IET Labs Inc.
- IFR
- Ignis
- ILX Lightwave
- Impact Instrumentation Inc.
- Industria Electronica Eudgert
- Infinity Systems Inc.
- Intermec
- International Aeradio Limited
- IOTech
- IRL
- iRobot
- ISO-TECH
- ITT
- Iwatsu
