- Insight Imaging
- Instant Replay
- Instatan
- Intelligent Meeting Corp
- Intellikote Systems Inc
- Inter Community Cancer Ctr
- International Foundation
- Investments Verity
- Ironwood Communications
- Irv Weiner Real Estate Inc
- Irwin Bank & Trust Co
- Island Inkjet
- Italian Village Pizza
- ITT Technical Institute
- IUP Monroeville Ctr
- J A Noll Co
- J B Electric Co
- J B Motors
