Keith Rabois (born March 17, 1969) is an American technology executive and investor. He is currently a general partner at Founders Fund. He is widely known for his early-stage startup investments and his executive roles at PayPal, LinkedIn, Slide, and Square (now known as Block, Inc.). Rabois invested in Yelp and Xoom prior to each company's initial public offering ("IPO") and sits on both companies' boards of directors. He is considered a member of the PayPal Mafia, a group that includes PayPal co-founders Peter Thiel, Reid Hoffman, Elon Musk, and PayPal employee and YouTube co-founder Jawed Karim. Additionally, Rabois has been involved in investments in YouTube, Palantir, Lyft, Airbnb, Eventbrite, Wish, and The Org.