- Industry Source
- INDY Lube
- Indymac Bank
- Infiniti
- Infinity
- Infinity Group
- Infinity Mortgage
- Inflow
- Information Management Systems
- Information Resources
- Infotech
- ING
- Ingersoll-Rand
- Ingersoll-Rand Air Solutions
- Ingersoll-Rand Equipment Sales
- Ingham Regional Medical Center
- Ingles Markets
- Ingles Supermarkets
- Ingram Entertainment
- Ingram Micro
- Initially Yours
- Ink
- Ink Spot Printing
- Inkwell
- Inland Container Corporation
- Inland Paperboard & Packaging
- Inland Truck Parts & Service
- Inn
- Innerspace
- Innovations Hair Design
- Innovative Construction
- Innovative Creations
- Innovative Financial Solutions
- Innovative Marketing
- Innovative Mortgage Solutions
- Innovative Realty
- Innovative Solutions
- Innovative Systems
- Innovative Technologies