ABC-Clio, LLC (stylized ABC-CLIO) is an American publishing company for academic reference works and periodicals primarily on topics such as history and social sciences for educational and public library settings. Since 2021, ABC-Clio and its suite of imprints are collectively imprints of British publishing house Bloomsbury Publishing. ABC-Clio provides service to fifteen different online databases which contain over one million online textbooks. The company consults academic leaders in the fields they cover in order to provide authority for their reference titles. The headquarters are located in Santa Barbara, California. ()