The United States hosts the world’s most mature and capital-rich startup ecosystem, home to thousands of venture capital firms, angel investors, and institutional funds actively backing startups at every stage. From early-stage founders to scaleups, this page helps you discover the best startup investors in the United States, including top VC firms and prominent angel investors. Here, you can find investors focused on general startups as well as specialised funds investing in AI startups and crypto startups across major hubs like Silicon Valley, New York, and Austin.