List of Nippon Professional Baseball players (I)

This is a list of Nippon Professional Baseball (NPB) players whose last names begin with the letter "I". This list includes players from both the Central League and the Pacific League, past and present. It is intended to be a comprehensive, though potentially incomplete, record of individuals who have played professionally in NPB and whose surnames start with "I". Information included may cover Japanese players as well as foreign-born players who have played in NPB. It may include variations in romanization of Japanese names. This list aims to provide a reference for baseball researchers, historians, and fans interested in the personnel who have contributed to the sport in Japan.