A yearbook, also known as an annual, is a type of a book published annually. One use is to record, highlight, and commemorate the past year of a school. The term also refers to a book of statistics or facts published annually. A yearbook often has an overarching theme that is present throughout the entire book.

Annual publications, more often simply called annuals, are periodical publications appearing regularly once per year. Although exact definitions may vary, types of annuals include: calendars and almanacs, directories, yearbooks, annual reports, proceedings and transactions and literary annuals. A weekly or monthly publication may produce an Annual featuring similar materials to the regular publication. Some encyclopedias have published annual supplements that essentially summarize the news of the past year, similar to some newspaper yearbooks.