Giovanni Battista Viotti was the most influential violinist of the late eighteenth century. His twenty-nine violin concertos provided the starting point for a whole generation of violinists: Kreutzer Rode Baillot Ludwig Spohr and many more. To the nineteenth century Viotti was the founder of the modern violin school. This new catalogue includes all known works separates original works from arrangements summarizes the publication history during Viotti’s lifetime and makes use of recently available techniques for dating publications. It attempts to list all known editions and to deal with the considerable problems of works existing in more than one form.