Naomasa is a masculine Japanese given name. Notable people with the name include:Akai Naomasa , Japanese samurai Harada Naomasa , Japanese samurai Ii Naomasa , Japanese daimyō Nabeshima Naomasa , Japanese daimyō Nagai Naomasa , Japanese daimyō Naomasa Sakonju , Imperial Japanese Navy admiral Naomasa Yamasaki , Japanese geographer Yasumi Naomasa , Japanese samurai
