Miyoshi Nagayoshi (三好長慶?) (1523-1564) was a Japanese samurai who was lord of the Miyoshi clan during the Sengoku period. The Miyoshi clan (三好氏 -shi) is a Japanese family descended from Emperor Seiwa (850-880 and the Minamoto clan (Seiwa-Genji 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. 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. The was a Japanese samurai clan which wielded considerable power in the Muromachi period under the Ashikaga shogunate. The was a Japanese samurai clan, descended from Emperor Seiwa (850-880 and a branch of the Minamoto clan, by the Ashikaga clan.
Following his death, Nagayoshi was be succeeded by his son, Yoshitsugu. adopted son of Nagayoshi, was a Samurai of the Sengoku period who was practically the last head of Miyoshi clan, Daimyo of Kawachi province