| Link | iD Ventures America | Santa Clara | California | Lineo, Inc. | | | Communications Services Security |
| Link | Idanta Partners | San Diego | California | Iomega | | | |
 | In-Q-Tel | Arlington | | Attensity Corporation, Lingotek | 1 | | Communications Electronics Software Advanced Materials Medical Devices Security |
| Link | Infineon Ventures | Munich | | EmWare | | | Hardware |
| Link | Infobase Ventures | | | 10Speed Media, The Generations Network | 2 | | Content & Media Information Services Software Services |
| Link | Inktomi | Foster City | California | Campus Pipeline | | | |
 | InnoVentures Capital Partners (FKA UTFC) | Salt Lake City | | CG4 Solutions, Cogito, Inc, Corda Technologies, Inc, FatPipe Networks, First Choice Solutions, Ingeo Systems, Inc., Metro Ready Mix, LLC, Metro Waste, Property Solutions International, SilentWhistle, Inc.... | 66 | $25,855,200 | Electronics Software Services |
| Link | Insight Capital Research & Management, Inc | Walnut Creek | | | | | |
| Link | Insight Venture Partners | New York | | Ikano Communications, Inc | 1 | $27,750,000 | Communications Content & Media Information Services Electronics Software Storage Security |
| Link | Institutional Venture Partners | Menlo Park | California | Mainstream Data, Inc | | | Communications Content & Media Information Services Software Advanced Materials Medical Devices |
| Link | Integral Capital Partners | Menlo Park | California | Viewpoint Datalabs International Inc. | | | Communications Information Services Software Storage Medical Devices Research Security |
 | Intel Capital | Santa Clara | | Agilix Labs, Inc, Cymphonix, LignUp, The Generations Network | 5 | $32,550,000 | Communications Content & Media Information Services Electronics Hardware Software Security |
| Link | Invencor, Inc. | Menlo Park | California | ARCANVS, Inc. | 2 | $1,250,000 | |
| Link | INVESCO Private Capital | New York | New York | NPS Pharmaceuticals | | | Biotechnology Communications Electronics Software Medical Devices Research Security |
| Link | InvestAmerica Venture Group, Inc. | Cedar Rapids | Iowa | | 2 | $2,000,000 | |
| Link | Investor Growth Capital | Stockholm | | Mainstream Data, Inc | | | Biotechnology Communications Electronics Hardware Healthcare Services Software Advanced Materials Medical Devices |
| Link | Invitrogen | | | | 1 | | |
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