List of Major League Baseball players (I)

This is a list of Major League Baseball (MLB) players with last names beginning with the letter "I". The list includes players who have appeared in at least one MLB game since the formation of the National League in 1876 and the American League in 1901. It is sorted alphabetically by last name. The list aims to be comprehensive but may not be exhaustive due to data limitations and ongoing discoveries of previously undocumented players.

For each player, typically the primary position played is noted, but players who played multiple positions extensively may have several listed. This list does not include players solely associated with leagues that existed before the National League, or those exclusively in minor leagues.

Players who changed their last name (e.g., through marriage or legal name change) are generally listed under the name they used for the majority of their MLB career.

This list is intended for informational purposes and as a starting point for further research on individual players.