The Affordable College Textbook Act is a United States legislative bill intended to support use of open textbooks. It was introduced on April 4, 2019, to the 116th Congress by four senators (Dick Durbin of Illinois, Angus King of Maine, Kyrsten Sinema of Arizona, Tina Smith of Minnesota), and one representative (Joe Neguse of Colorado). Organizations supporting the bill include the American Federation of Teachers, the American Association of Community Colleges, the Association of Research Libraries, and Creative Commons.