Carl Peter Paul Vitz (June 3, 1883 – January 1, 1981) was an American librarian and author. He received a certificate from Western Reserve University Library School, a degree from Adelbert College and a bachelor's degree in library science from New York State Library School at New York State Normal College. He served as a library director for the Toledo-Lucas County Public Library (1922–1937), the Minneapolis Public Library (1937–1945) and the Public Library of Cincinnati and Hamilton County (1946–1955). He served as the president of the American Library Association from 1945–1946. During that time, Vitz wrote a letter to the President of the United States on behalf of the profession, addressing potential candidates for the vacant position of Librarian of Congress. In the letter, Vitz sugg