三好氏
, eldest son of Miyoshi Motonaga, was a Japanese samurai and "daimyō" who was lord of the Miyoshi clan during the Sengoku period. 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.