- ICICI Bank Limited
- ICO Incorporated
- Idex Corporation
- IDT Corporation
- IHOP Corporation
- Illinois Tool Works Incorporated
- Illumina Incorporated
- Image Entertainment Incorporated
- ImClone Systems Incorporated
- Imperial Oil Limited
- Imperial Sugar Company
- IMS Health Incorporated
- Independence Community Bank Corporation
- Independence Federal Savings Bank
- Independent Energy Holdings Plc
- IndyMac Bancorp Incorporated
- Inergy Holdings LP
- Infineon Technologies AG
- Informatica Corporation
- Infosys Technologies Limited
- ING Groep NV
- ING Group
- Ingersoll-Rand Company
- Inland Real Estate Corporation
- Inland Steel Company
- Innotrac Corporation
- Insight Enterprises Incorporated
- InsWeb Corporation
- Integra Bank Corporation
- Integral Systems Incorporated
- Intel Corp.
- Intelli-Check Incorporated
- InterActiveCorp
- InterContinental Hotels Group Plc
- IntercontinentalExchange Incorporated
- International Assets Holding Corporation
- International Broadcasting Corporation
- International Business Machines Corporation
- International Coal Group Incorporated
- International Energy
- International Game Technology Incorporated
- International Paper Company
- International Smart Sourcing Incorporated
- International Speedway Corp.
- International Star Incorporated
- Interpharm Holdings
- Interpublic Group of Companies Incorporated
- Intrawest Corporation
- Intuit Incorporated
- Intuitive Surgical Incorporated
- Investment Technology Group Incorporated
- Invitrogen Corporation
- Iomega Corporation
- iParty Corporation
- iRobot Corporation
- Iron Mountain Incorporated
- iStar Financial Incorporated
- Isuzu Motors Ltd.
- ITC Holdings Corporation
- Itron Incorporated
- iVillage Incorporated