Miyabe Keijun (宮部継潤, 1528 – April 20, 1599) He was a Tendai monk from Mount Hiei in western Japan and Azai clan retainer.
He was the father of Miyabe Nagafusa and became a reputable administrator under Toyotomi Hideyoshi during the latter half of the Sengoku period of feudal Japan.
Fighting against the Oda clan during the Battle of Anegawa in 1570, Nagamasa and his counterpart Asakura Yoshikage were defeated, prompting Keijun to distrust his lord's ability, but not to the point in which he was willing to defect.
In response, Nagamasa took Kazumasa's elderly mother, who he held hostage in Odani Castle, to the execution grounds for death.
He supporting Hideyoshi by additionally taking part in the Kyūshū Campaign of 1587, Keijun fought in the majority of the battles and observed other conflicts—such as the Toyotomi attack upon Hyūga Province's Taka Castle.