Trebizon is a series of school story novels by Anne Digby set in the fictional school of that name. The fourteen novels were published between 1978 and 1994. Like Enid Blyton's much earlier creation, Malory Towers, Trebizon is located in Cornwall. The novels follow the protagonist Rebecca Mason from when she joins the school in the second form through to the end of her fifth year. A major theme throughout the series is Rebecca's burgeoning talent for tennis. Other major characters include Rebecca's two best friends, Tish Anderson and Susan Murdoch, and her boyfriend Robbie Anderson.