Funds, angels and corporates active in European rounds
| Investor | Type | Deals | Companies | Top sector | Active |
|---|---|---|---|---|---|
| Oetker Ventures | Venture capital | 1 | 1 | Foodtech | 2026 |
| Oetker Beteiligungen | Private equity | 1 | 1 | HRtech | 2023 |
| Ofer Adler | — | 1 | 1 | Fintech | 2006 |
| Off Piste | Venture capital | 1 | 1 | Cybersecurity | 2026 |
| Off The Chain Capital | Venture capital | 1 | 1 | Fintech | 2025 |
| Off7 | — | 1 | 1 | Marketing | 2016 |
| Offerta | — | 1 | 1 | Healthtech | 2017 |
| Office of the Chief Scientist of Israel - OCS | — | 1 | 1 | Software | 2012 |
| Official Credit Institute (ICO) | Venture capital | 1 | 1 | Travel | 2026 |
| Offline Ventures | Venture capital | 1 | 1 | Fintech | 2023 |
| Offord Ventures | Venture capital | 1 | 1 | Software | 2025 |
| Offset Ventures | Venture capital | 1 | 1 | Cybersecurity | 2023 |
| OFME | Venture capital | 1 | 1 | Energy | 2023 |
| OG Tech | Venture capital | 1 | 1 | Software | 2021 |
| Ogawa | — | 1 | 1 | Robotics | 2018 |
| OGHI | Venture capital | 1 | 1 | Agritech | 2024 |
| Ogilvy Vilnius | Angel | 1 | 1 | Software | 2024 |
| Oğuzhan Öztürk | Angel | 1 | 1 | Software | 2022 |
| OHA BTG | Venture capital | 1 | 1 | Healthtech | 2023 |
| OHA Osnabruck Healthcare 7 Ventures | Venture capital | 1 | 1 | Telecom | 2024 |
| OHA Osnabrück Healthcare Accelerator | Accelerator | 1 | 1 | HRtech | 2023 |
| OHA Osnabrück Healthcare Beteiligungs | Corporate | 1 | 1 | Healthtech | 2023 |
| OHB Digital | Venture capital | 1 | 1 | Cleantech | 2021 |
| Oilinvest | Venture capital | 1 | 1 | Cleantech | 2024 |
| OION Angels | — | 1 | 1 | Energy | 2022 |
