Cameron Howard Winklevoss (born August 21, 1981) is an American cryptocurrency investor, Olympic rower, and cofounder of Winklevoss Capital Management and Gemini cryptocurrency exchange. He competed in the men's pair rowing event at the 2008 Summer Olympics with his rowing partner and identical twin brother, Tyler Winklevoss. Winklevoss and his brother are known for co-founding HarvardConnection (later renamed ConnectU) along with Harvard classmate Divya Narendra. In 2004, the Winklevoss twins sued Facebook founder Mark Zuckerberg, claiming he stole their ConnectU idea to create the social networking site Facebook. In addition to ConnectU, Winklevoss also co-founded the social media website Guest of a Guest with Rachelle Hruska.