Miyoshi Nagayoshi (三好 長慶, March 10, 1522 – August 10, 1564), eldest son of Miyoshi Motonaga, was a Japanese samurai and powerful daimyō who ruled seven provinces of Kansai. Nagayoshi held the court titles of Shūri-dayū (修理太夫) and Chikuzen no Kami (筑前守), and was also known by the more Sinic reading of his name: Chōkei (長慶). During his tenure, the Miyoshi clan would experience a great rise of power, and engage in a protracted military campaign against its rivals, the Rokkaku and the Hosokawa. Nagayoshi defeated Ashikaga Yoshiteru and banished him from Kyoto in 1555.