This catalogue presents a survey of the complete corpus of Handel's surviving autographs. Music works and movements to be found in autograph are identified by reference to standard collected editions and the thematic catalogue of Handel's works (HWV) published in Vols. I-III of the Handel-Handbuch. More than 7,500 leaves of Handel's musical autographs survive today, as testimony to a creative career in Germany, Italy, and London that spanned the first half of the eighteenth century. Most of the autographs are now in two major collections: the Royal Music Library collection at the British Library, and the Founder's Collection at the Fitzwilliam Museum, Cambridge. The remainder are dispersed through collections in Britain, Germany, Switzerland, Austria, and the USA. Works and movements for which autographs survive are identified, and essential information about the physical characteristics are recorded including the watermark type for each leaf of paper, the types of rastra (stave ruling) employed, and the presence of pencil annotations. All watermark types are illustrated with full-size diagrams. This catalogue, the first published systematic survey of a body of autographs of this size and complexity, is an essential guide for anyone studying Handel's autographs, whether the originals, on facsimile, or on film.