Hiroshi Kawachi is a Japanese pathologist and a Department Director of Cancer Institute Hospital, Japanese Foundation of Cancer Research, Tokyo, Japan. His main interest is gastrointestinal pathology including esophageal, gastric, duodenal, and intestinal tumors. He is a board member of the pathology committee of the Japan Esophageal Society (JES), Japanese Gastric Cancer Association (JGCA), and Japanese Society for Cancer of Colon and Rectum (JSCCR).