Book Club Associates (BCA) is a non-profit digital educational organisation and professional community that operates on LinkedIn and Instagram. It focuses on the application of ideas from literature to areas such as leadership, personal development, product management, technology, business, and psychology. The platform facilitates discussion and knowledge-sharing among its members. The name derives from Book Club Associates, a mail-order bookselling company founded in 1966 as a joint venture between W. H. Smith and Doubleday. The original company became one of the largest book clubs in the United Kingdom during the 1970s and 1980s, with membership exceeding two million. It distributed books through mail-order subscriptions and advertising, particularly in Sunday newspaper supplements, and at its peak shipped tens of millions of books annually.