Mōri Katsunaga

In this Japanese name, the surname is Mōri.

Mōri Katsunaga (毛利 勝永, 1577 – June 4, 1615) or Mōri Yoshimasa was an officer for the Toyotomi clan following the sixteenth-century Azuchi-Momoyama period through the early years of the seventeenth-century Edo period in Japan.

Katsunaga fought in the Japanese invasions of Korea (1592–1598), and in the [[[Battle of Sekigahara]] he joint the western legion but was defeated. Later, during the Siege of Osaka, Katsunaga, by tricking a guard, infiltrated Osaka castle. He defeated Honda Tadatomo (an officer for the Tokugawa) there in the summer.