Stephen Cohen is an American computer scientist and entrepreneur. He is best known as a co-founder and the president of Palantir Technologies, a platform for analyzing integration and visualizing data used by governments and businesses. He is credited with creating the initial prototype of Palantir in eight weeks. Since then, he has interviewed over 4,500 candidates and continues to be actively involved in Palantir. Previously to Palantir, Cohen worked with Peter Thiel at Clarium Capital. He also served as an adviser to BackType prior to its acquisition by Twitter in 2011.