The Cambridge Camden Society, known from 1845 as the Ecclesiological Society, was a learned architectural society founded in 1839 by undergraduate students at Cambridge University to promote "the study of Gothic Architecture, and of Ecclesiastical Antiques". Its activities came to include publishing a monthly journal, The Ecclesiologist, advising church builders on their blueprints, and advocating a return to a medieval style of church architecture in England. At its peak influence in the 1840s, the society had over 700 members, including bishops of the Church of England, deans at Cambridge University, and Members of Parliament. The society and its publications enjoyed wide influence over the design of English churches throughout the 19th century, and are often known as the ecclesiological movement.

William Camden was an English antiquarian, historian, topographer, and herald, best known as author of Britannia, the first chorographical survey of the islands of Great Britain and Ireland, and the Annales, the first detailed historical account of the reign of Elizabeth I of England.