JAM Fund is a venture capital firm associated with Tinder co-founder Justin Mateen that backs startups from pre-seed and seed through later venture rounds. The firm invests across consumer, fintech, healthtech, mobility, logistics, SaaS, marketplaces, e-commerce, blockchain and AI, and has acted as a lead investor in pre-seed and seed financings. It backs companies across the United States, Latin America, Europe, Africa, the Middle East, the United Kingdom and Pakistan, with portfolio examples including Tinder, Brex, Daily Harvest and Lyft.