Sierra Ventures is an early-stage venture capital firm founded in 1982 and headquartered in San Mateo, California. With over four decades of experience, the firm has invested in more than 100 companies, achieving over 20 IPOs and more than 50 mergers and acquisitions. Sierra Ventures focuses on Seed and Series A investments, typically committing up to $5 million for Seed rounds and up to $10 million for Series A rounds.

The firm's areas of interest include enterprise software, artificial intelligence, cybersecurity, healthcare, and infrastructure. Notable investments include Reify Health, Phenom, and Astronomer. Sierra Ventures emphasizes a collaborative partnership with founders, offering resources across product development, go-to-market strategies, executive recruiting, and fundraising.

The firm also provides access to its CXO Advisory Board, comprising over 75 Fortune 1000 technology executives, to support portfolio companies in scaling their businesses.