Nobunao Kumagai (1507-1593) was a Mori general. His father Motonao Kumagai died fighting under Motoshige Takeda, and he held Takamatsu Castle. He served in a number of endeavors of Motonari Mori, and later his son Terumoto Mori, and at the Battle of Chugoku he promised to fight until his bones turned to dust when his unit was struggling against the Tachibana.