Lifespan: 14xx to 5/12 of Eishō 17 (1520)
Father: Miyoshi Yukinaga
Siblings: Miyoshi Nagahide, Miyoshi Yorizumi, Nagamitsu, Miyoshi Naganori
Akutagawa Nagamitsu served as a bushō during the late Muromachi period into the Sengoku period.
Nagamitsu was born the son of Miyoshi Yukinaga. Nagamitsu was the father of Akutagawa Magojūrō.
On 5/5 of 1520, Nagamitsu joined in the Battle of Tōji Monastery against forces led by Hosokawa Takakuni and Rokkaku Sadayori. Nagamitsu, together with his family including his father and younger brother, Miyoshi Naganori, attempted to hide at the Donke Temple, but Takakuni ascertained their location, whereupon, on 5/10, he surrendered along with Naganori on the condition that their lives be spared. On 5/11, his father and his cousin, Shingorō surrendered, only to be deceived by Takakuni and executed that same day. On 5/12, Nagamitsu and Naganori were also executed. His age at the time is not known but thought to have been in the prime of his life.