Longworth Venture Partners is a venture capital firm that has led investments in some innovative and successful technology companies.
| Company | Date | Round | Size | Participants |
| Symform | 1/12 | Unattributed | $2M | 3 |
| PowerInbox | 8/11 | Seed | $1.1M | 10 |
| OwnerIQ Targeting and Retargeting | 6/11 | Unattributed | $7M | 2 |
| Mobiquity | 3/11 | Series A | $5M | 2 |
| Softricity | 10/10 | Series E | $15M | 6 |
| uTest | 9/10 | Series C | $13M | 3 |
| Marginize | 8/10 | Seed | $650k | 11 |
| Symform | 7/10 | Unattributed | $4M | 2 |
| Viewfinity | 2/10 | Series B | $9M | 3 |
| Grab Networks | 6/09 | Unattributed | $12M | 4 |
| Grab Networks | 6/09 | Unattributed | $12M | 4 |
| VKernel Corporation | 5/09 | Series B | $7M | 3 |
| Scrapblog | 1/09 | Series C | $4M | 2 |
| Rivermine Software | 1/09 | Series D | $5M | 4 |
| uTest | 12/08 | Series B | $5M | 4 |
| Thinking Screen Media | 5/08 | Unattributed | $3M | 2 |
| Thinking Screen Media | 11/07 | Series A | $2M | 2 |
| Sermo | 9/07 | Series C | $25M | 3 |
| Innovectra | 8/07 | Series C | $1.79M | 2 |
| Rivermine Software | 6/07 | Series C | $8.7M | 4 |
| Marathon Technologies | 3/07 | Series B | $12M | 3 |
| Cellufun | 3/07 | Series A | $3M | 1 |
| Sermo | 1/07 | Series B | $9.5M | 2 |
| Scanbuy | 12/06 | Series B | $9M | 3 |
| Brabeion Software | 12/06 | Series A | $5.1M | 3 |
| Genesis Networks | 9/06 | Series B | 2 | |
| Grab Networks | 9/06 | Series B | $10.5M | 3 |
| Sermo | 9/06 | Series A | $3M | 1 |
| Scrapblog | 3/06 | Series A | $2.5M | 1 |
| Tizor Systems | 9/05 | Series B | $12M | 5 |
| Rivermine Software | 5/05 | Series B | $10M | 3 |
| Brabeion Software | 4/05 | Series A | $5M | 3 |