Nagao Tamekage (長尾 為景, c. 1486 or 1489 – December, 1536 or January 29, 1543) was a retainer of Japanese feudal lord , and a daimyō in his own right, during Japan's Sengoku period. He is perhaps best known as the biological father of Nagao Kagetora, who would be adopted into the Uesugi clan as Uesugi Kenshin, and has become one of the most famous Sengoku-period daimyōs. Tamekage then engaged Uesugi Akisada, and defeated him as well, with the help of Hōjō Sōun, another growing power in the region. Within a few years, Nagao and Hōjō brought about the complete collapse of the Uesugi clan.