Okapi Venture Capital
Named for the "dense jungle"-adapted animal, this seed and early-stage fund has backed information technology and life science startups since 2005.
Okta Ventures
Corporate venture arm of Okta investing in identity, security, and privacy startups across all stages to extend the Okta ecosystem.
Olive Technology Ventures
Multi-family-office-backed venture platform with ~$1B AUM, led by ex-WestSummit/Vertex Ventures partner Elise Huang; exits include Unity, UiPath.
Olive Tree Capital
Boston-based family office-rooted VC investing in technology, life sciences, fintech, and frontier startups globally across early and growth stages.
OMERS Ventures
Backed by Canada's OMERS pension fund, invests in early-stage fintech, vertical software, and AI infrastructure founders.
OMX Ventures
Lincolnshire-based early-stage VC investing at the convergence of biology, big data, and AI, backing therapeutics, bio-tools, diagnostics, and synthetic biology companies across North America and Europe.
OneSixOne Ventures
Pre-seed VC for enterprise software and govtech startups
Open Opportunity Fund
B2B software VC backing Black and Latino founders across the US
OpenSky
Operator-led fund founded by ex-Pandemic Studios and StackCommerce founders, backing commerce-enablement tech and consumer brands at pre-seed through Series A.
Operator Collective
Venture fund and community of operators backing enterprise and B2B founders
Operators Studio
Micro-VC run by solo GP Soumitra Sharma backing "Global Indian" tech founders in the US-India corridor with $50–100k pre-seed and seed checks.
Optimist Ventures
New York-based multi-stage VC backing founders in AI, InsurTech, Fintech, and industrial automation across early and late stage.
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Spun out of Exor's century-old conglomerate in 2024, backs resilience-focused founders in AI infrastructure, security and automation.
Orange Collective
AI-native YC alumni fund backing breakout YC founders building in AI infrastructure, applied AI, agentic tools, and vertical software at seed stage.
Oregon Venture Fund
Regional VC providing capital and support to Oregon/SW Washington startups and growth companies
Origin Ventures
Early-stage VC leading seed and Series A rounds for 25+ years, now focused on AI infrastructure, AI-native software, and frontier tech.
Original Capital
Early-stage fund that skips board seats to stay founder-aligned, backing technically deep, relentless founders in vertical software and fintech.
Osage Venture Partners
Investing in early-stage B2B software start-ups for over two decades
Outlander VC
Early-stage VC that funds exceptional founders and their outlandish visions first, often investing pre-product and pre-revenue.
Outset Capital
Pre-seed and seed fund investing in AI, deep tech, and future of work
Outsiders Fund
Early-stage VC backing European founders building enduring tech companies
Overmatch Ventures
Early-stage VC backing deep tech, defense, and space founders in the US. Built by military veterans and operators investing from Seed through Series B.
Overture
Early-stage VC investing in energy, AI, resilience, and industrial transformation startups, helping founders win government support.
Overwater Ventures
Early-stage fund led by ex-a16z partner Kristina Simmons, backing pre-seed/seed breakthrough tech that improves human and planetary health.
Showing 817–840 of 1239 investors
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