The Speculative Society is a Scottish Enlightenment society dedicated to public speaking and literary composition, founded in 1764. It was mainly, but not exclusively, an Edinburgh University student organisation. The formal purpose of the Society is as a place for social interchange and for practising of professional competency in rhetoric, argument, and the presentation of papers among fellow members. While continuing to meet in its rooms in the University's Old College, it has no formal links to the University.