Miyoshi Nagayoshi (?? ??, March 10, 1522 – August 10, 1564), eldest son of Miyoshi Motonaga, was a Japanese samurai and daimyo who was lord of the Miyoshi clan during the Sengoku period.
Nagayoshi held the court titles of Shuri-dayu (????) and Chikuzen no Kami (???), and was also known by the more Sinic reading of his name: Chokei (??).
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.Following his death, Nagayoshi was succeeded by his adopted son, Yoshitsugu (the son of Sogo Kazunari, his younger brother).