|Head of Miyoshi clan|
|Succeeded by||Miyoshi Yoshitsugu|
|Born||March 10, 1522|
Yamashiro Province, Japan
|Died||August 10, 1564 (aged 42)|
Kawachi Province, Japan
|Spouse(s)||Hatano Tanemichi's daughter|
|Relations||Miyoshi Yoshikata (brother)|
Atagi Fuyuyasu (brother)
Sogō Kazumasa (brother)
Miyoshi Yoshitsugu (adopted son)
Miyoshi Nagayoshi (三好 長慶, March 10, 1522 – August 10, 1564), 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.
Following his death, Nagayoshi was succeeded by his adopted son, Yoshitsugu (the son of Sogō Kazunari, his younger brother). Nagayoshi died in Iimoriyama Castle in 1564.