 | Banyan Ventures, LLC | Salt Lake City | | | | | Software |
 | BatteryVentures Limited Partnership | San Meteo | | | | | Communications Content & Media Electronics Software Services Energy |
| Link | BC Select Funds | | | Infopia | 1 | | Security |
| Link | Bear Stearns Merchant Banking | New York | New York | | 1 | $5,380,000 | Biotechnology Communications |
| Link | Bellevue Asset Management | Kuesnacht | | Sonic Innovations | | | |
 | Benchmark Capital Management Co, LLC | Menlo Park | | Arteis, Inc, Logoworks, Inc, Move Networks | 2 | $19,370,000 | Content & Media Information Services Electronics Software Services Security |
| Link | Berger Funds | Denver | Colorado | Mainstream Data, Inc | | | |
 | BEV Capital | Stamford | | | 1 | | Content & Media Information Services Software Energy |
| Link | Biz Cradle | | | | | | |
| Link | Blackstone Group, L.P. | New York | New York | Phobos Corporation | 1 | $2,000,000 | Biotechnology |
| Link | Blueprint Ventures LLC | San Francisco | California | | 1 | | Communications Information Services Electronics Software |
| Link | BlueRun Ventures | Menlo Park | | SliceX | 1 | $5,000,000 | Communications Content & Media Information Services Electronics Software Storage Energy |
| Link | BlueVector, LLC | Palo Alto | California | Spontaneous Technology | 1 | $2,080,000 | |
| Link | Blum Capital Partners, LP | San Francisco | California | | 1 | $1,330,000 | |
| Link | BrainStorm Ventures International | San Francisco | California | FutureSmart Networks | | | |
| Link | Brentwood Venture Capital | | | SmartTalk | | | Biotechnology Communications Information Services Software Services Medical Devices |
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