Peter Andreas Thiel (born 11 October 1967) is a German-American billionaire entrepreneur, venture capitalist, and political activist. A co-founder of PayPal, Palantir Technologies, and Founders Fund, he was the first outside investor in Facebook. As of June 2023, Thiel had an estimated net worth of $9.7 billion and was ranked 213th on the Bloomberg Billionaires Index.

He worked as a securities lawyer at Sullivan & Cromwell, as a speechwriter for former U.S. Secretary of Education William Bennett and as a derivatives trader at Credit Suisse. He founded Thiel Capital Management in 1996. He co-founded PayPal with Max Levchin and Luke Nosek in 1998, serving as chief executive officer until its sale to eBay in 2002 for $1.5 billion.

After PayPal, he founded Clarium Capital, a global macro hedge fund based in San Francisco. In 2003, he launched Palantir Technologies, a big data analysis company, serving as its chairman since its inception. In 2005, he launched Founders Fund with PayPal partners Ken Howery and Luke Nosek. Earlier, Thiel became Facebook's first outside investor when he acquired a 10.2% stake for $500,000 in August 2004. He sold the majority of his shares in Facebook for over $1 billion in 2012 but remains on the board of directors. After the Fifth National Government intervened on his behalf, Thiel was controversially granted New Zealand citizenship in 2011 after spending 12 days in the country non-consecutively. He co-founded Valar Ventures in 2010; co-founded Mithril Capital, serving as investment committee chair, in 2012; and served as a part-time partner at Y Combinator from 2015 to 2017.

Peter Thiel