Katakura Shigenaga (片倉 重長, 1585 – May 16, 1659) was a Japanese samurai of the Azuchi-Momoyama period through early Edo period. The son of Katakura Kagetsuna, Shigenaga was the second man to bear the common name Kojūrō. His name was originally Shigetsuna; however, to avoid conflict with the fourth shogun Ietsuna's name, he changed it to Shigenaga. In 1614, he took part in the Osaka Campaign, fighting Gotō Matabei at Dōmyōji Temple.
Shigenaga's second wife was the daughter of Sanada Yukimura, and following the Osaka Campaign, Shigenaga assisted many of the masterless former Sanada retainers.
He was succeeded by his son Kagenaga.