| Akaike Nagatō | |
| Native Name: | 赤池 長任 |
| Native Name Lang: | jpn |
| Birth Name: | Akaike Nagatō |
| Birth Date: | 1529 |
| Death Date: | 1568 |
| Birth Place: | Japan |
| Death Place: | Japan |
| Rank: | Sumurai (lord of Akaike Castle) |
| Battles: | Battle of Dō-ga-saki |
was a Japanese samurai of the Sengoku period who served the Sagara clan of southern Kyūshū and held the court title of . The lord of Akaike Castle in Higo Province, Akaike achieved fame at the fight at Ōkuchi Castle in 1568, when he defeated the forces of Shimazu Yoshihiro at the Battle of Dō-ga-saki. [1]