Warren Clark (November 7, 1936, Bronxville, New York – July 24, 2018) was a career diplomat who served as an Ambassador of the United States to São Tomé and Príncipe as well as Gabon (1987–1989). When he returned stateside, he was first deputy to the assistant secretary of state for Africa. It has been said “ Clark played a key role in shaping the George H. W. Bush administration’s efforts to nudge the apartheid regime in South Africa to peacefully relinquish power.“