This chapter provides detail description of Benign tumors. Chapter has 23 well illustrated diagrams and pictures. Gastrointestinal stromal tumor, leiomyoma, inflammatory polyp, submucosal lipoma, villous adenoma, lymphoid hyperplasia, sentinel polyp, multiple adenomatous polyp, prepyloric submucosal polyp, Hamartomatous polyp, villous adenoma are described in detail with the help of coloured pictures and relevant text given in boxes.