One City One Book (OCOB) is the general name for a national reading program; its goal is to promote literacy and community by reading the same book within a geographic area. In 1998, the first program was called "If All of Seattle Read the Same Book" at Seattle Public Library's Washington Center for the Book.
Other cities latched onto this idea and have since created their own branches of the concept. In each participating location, the specific name of a program is often customized to that individual city. The Library of Congress keeps record of all known programs and the books that have been selected.
Programs involve book discussion sessions, scholarly lectures, author visits, exhibits, screenings of the movie adaptation (if it exists), and so forth. OCOB is a large network but currently has no cohesive brand identity or website.