Matrix Partners is a U.S.-based venture capital firm founded in 1977 by Paul J. Ferri and Warren Hellman. The firm specializes in seed and early-stage investments across sectors such as software, communications, semiconductors, data storage, internet, and wireless technologies.

Headquartered in Palo Alto, California, with an additional office in Cambridge, Massachusetts, Matrix Partners has a rich history of supporting innovative companies. Notable investments include Apple Inc., JBoss, SanDisk, and VERITAS Software. Over the years, the firm has raised multiple funds, including a $1 billion fund in 2001 and a $600 million fund in 2009.

In 2024, Matrix Partners rebranded its China and India units as MPCi and Z47, respectively, reflecting greater independence for its international operations.