Carla Diane Hayden is an American librarian who served as the 14th librarian of Congress. Hayden was both the first African American and the first woman to hold this post. Appointed in 2016, she was the first professional librarian to hold the post since 1974. In May 2025, she was dismissed from the post by President Donald Trump. On July 7, 2025, she was appointed senior fellow at the Andrew W. Mellon Foundation.