Western Technology Investment (WTI) is a venture debt firm founded in 1980, headquartered in Portola Valley, California. Since its inception, WTI has provided over $7 billion in debt and equity capital to more than 1,400 technology and life science companies, ranging from early-stage startups to publicly traded entities. The firm specializes in offering flexible, founder-friendly financing solutions that minimize dilution, with investments typically ranging from $250,000 to over $25 million.

WTI's portfolio includes notable companies such as Google, Meta (formerly Facebook), Palantir, and Toast. The firm is currently investing from its 11th institutional fund, supported by institutional limited partners including endowments, non-profits, academic institutions, and select family offices.