Funds, angels and corporates active in European rounds
| Investor | Type | Deals | Companies | Top sector | Active |
|---|---|---|---|---|---|
| InfoCapital | Venture capital | 3 | 2 | Edtech | 2022 |
| Infosto | — | 3 | 1 | Marketing | 2010–2016 |
| ING Corporate Investments | Investment firm | 3 | 2 | Energy | 2022–2024 |
| ING Sustainable Investments | Venture capital | 3 | 2 | Energy | 2021–2023 |
| Initial Coin Offering | — | 3 | 3 | Fintech | 2017–2018 |
| Innoport | Venture capital | 3 | 3 | Cleantech | 2021–2023 |
| Innovation Ulster | Venture capital | 3 | 3 | Healthtech | 2025 |
| Innoven Partners | Investment firm | 3 | 3 | Healthtech | 2004–2009 |
| InnoVentureFonds (IVF) | Venture capital | 3 | 3 | Cleantech | 2025–2026 |
| Innovestor Angel CoFund | Venture capital | 3 | 3 | E-commerce | 2026 |
| Inspire Investments | Venture capital | 3 | 3 | Agritech | 2022–2023 |
| Institut Valencià de Finances (IVF) | Government / public | 3 | 3 | Software | 2024–2025 |
| InterCapital Group | — | 3 | 3 | Cleantech | 2013–2025 |
| Intermedia | — | 3 | 2 | Software | 2016–2017 |
| Intertrust | — | 3 | 1 | Software | 2013–2015 |
| Interzero | Venture capital | 3 | 2 | Energy | 2023–2025 |
| Intesa Sanpaolo Innovation Center | Venture capital | 3 | 3 | Software | 2024–2026 |
| Intrepid Growth Partners | Venture capital | 3 | 2 | Cybersecurity | 2025–2026 |
| InvestEU | Venture capital | 3 | 3 | Energy | 2024–2025 |
| Investible | — | 3 | 3 | Software | 2017–2021 |
| Investis | Venture capital | 3 | 3 | Fintech | 2018–2023 |
| Investitionsbank Berlin | — | 3 | 3 | Software | 2019–2024 |
| Investitionsbank Berlin (IBB) | — | 3 | 3 | Cleantech | 2017–2022 |
| Investment Fund for Northern Ireland (IFNI) | Investment firm | 3 | 3 | Healthtech | 2024–2026 |
| Investment Fund of Denmark (EIFO) | Investment firm | 3 | 3 | Energy | 2023–2024 |
