This book provides a valuable resource for surgeons and health care providers who care for patients with colorectal disease at all stages of their careers. In line with previous editions, it aims to build upon the collective experience and expertise from national and international experts in the field, providing a completely revamped, up-to-date tome covering the wide breadth of colorectal disease organized around the “pillars” of colorectal surgery including perioperative care (including endoscopy); anorectal disease; benign disease (including inflammatory bowel disease); malignancy; pelvic floor disorders; and a “miscellaneous” section that covers aspects both inside and beyond the operating room that are pertinent to providers at every level. In addition, each chapter contains several Key Concepts that succinctly depict the major learning objectives for individual sections and are in line with the Core Curriculum for Colon and Rectal Surgery provided by Association of Program Directors in Colon and Rectal Surgery and the key topics used by the American Board of Colon and Rectal Surgery. The ASCRS Manual of Colon and Rectal Surgery 3rd Edition serves as a relevant and practical tool to provide information, recommendations, and ultimately help improve the care and outcome for our patients.