What is the name of the venture capital firm founded by Peter Thiel?

The venture capital firm founded by Peter Thiel is Founders Fund.

Thiel organized Founders Fund in 2005 with fellow PayPal alumni Ken Howery and Luke Nosek. Based in San Francisco, the firm was built around backing ambitious technology companies, often at stages when conventional investors considered the risks unusually high.

Founders Fund became known for early investments in Facebook, SpaceX, and Palantir Technologies. Thiel had personally invested in Facebook before the fund existed, and Founders Fund later became associated with his contrarian investment style and preference for companies pursuing large technological or industrial goals.

The alternatives are well-known startup-investing organizations, but they have different origins. Y Combinator is an accelerator founded by Paul Graham and others; Techstars is an accelerator network founded by David Cohen, Brad Feld, David Brown, and Jared Polis; Andreessen Horowitz was founded by Marc Andreessen and Ben Horowitz in 2009.

Founders Fund later expanded into areas including defense technology, artificial intelligence, biotechnology, and space.