Below are some of the most influential businesses that begin with the letter I.
- Icahn & Company
- Intercontinental Capital Group
- Iridium Communications Inc.
- IEC Electronics Corporation
- Insight Enterprises
- Ingram Industries
- The Iams Company
- Illinois Tool Works Inc.
- IKEA Group
- Intel Corporation
- Interactive Brokers Group, Inc.
- IDT Energy
- Interior Design Firm
- Intergraph Corporation
- ISG
- iViZ Security
- International Epidemiology Institute