- Internet Explorer
- Internet Explorer 4
- Internet Explorer 5
- Internet Group
- Internet Information Services
- Internet Initiative Japan, Inc.
- Internet Society
- Internetwork Engineering, Inc.
- Internode (ISP)
- InterPARES Project
- Interphase Corporation
- Interplay BATTLE CHESS
- Interplay Descent
- Interplay Descent 2
- Interplay Entertainment Corp.
- Interplay Fallout
- Interplay Fallout 2
- Interplay Icewind Dale
- Interplay MDK
- Interplay MDK2
- Interplay SACRIFICE
- Interplay Star Trek Starfleet Command
- Interplay Torment
- InterProse Corporation, The
- Intersil
- InterSoft
- Intersolv
- Interstate Colour Pistol TV Game (1165)
- Interstate Electronics Ltd.
- Interstate Mini TV Game 1104
- Interstate Multisport TV Game 1110
- Interstate Pistol TV Game 1160
- Interstate Programaster 1125
- Interstate TVG-1199
- InterSystems
- Intertec Data Systems
- Intertec HeadStart
- Intertec Superbrain
- Intertech Corporation
- Interton Club Exclusiv 2000
- Interton Electronic
- Interton Video 2000
- Interton Video 2400
- Interton Video 2501
- Interton Video 2800
- Interton Video 3000
- Interton Video 3001
- Interton Video Computer 4000
- Intertype Corporation
- IntervalZero
- InterVideo
- InterWorks
- InterXion Holding N.V.
- Intetics Corporation
- Intific
- Intility AS
- Intland Software GmbH
- Intlock
- Intone Networks
- InTouch
- Intracom Holdings
- Intrado Inc.
- Intralinks
- Intrasect Technologies
- Intrinsyc
- Introduction
- Introduction to Email Verification Software
- Introduction: Hazards of life…
- Intrust Group
- Intuary, Inc
- Intuit, Inc
- Intuitive Company
- Intuitive Technology Group
- Invata
- Inventec Corporation
- Invention Machine
- Inventive Designers
- Inventor Ted Hoff's Keynote @ World IP Day- April 26, 2013 in San Jose, CA
- Investintech
- Investis
- Invicta Networks
- Invision Power Services
- Involta LLC
- Involver, Inc.
- Inxight
- INXPO
- iNymbus
- IO Interactive
- Iobit
- IObit Malware Fighter
- IObit Malware Fighter
- IObit Uninstaller
- IObit Unlocker
- Iolo Technologies
- Iomart Group plc
- Iomega
- Iomega One Step Backup
- ION Geophysical
- ionCube