Ioannis Papadiamantopoulos

Ioannis Papadiamantopoulos (Ιωάννης Παπαδιαμαντόπουλος) may refer to:


 * Ioannis Papadiamantopoulos (1766–1826), Greek revolutionary leader
 * Ioannis Papadiamantopoulos (major general), Greek officer
 * Jean Moréas (born Ioannis A. Papadiamantopoulos), poet