Takeda Katsuyori (武田 勝頼?, 1546 – 3 April 1582) was a Japanese daimyo of the Sengoku period, who was famed as the head of the Takeda clan and the successor to the legendary warlord Takeda Shingen. He was the son of Shingen by the daughter of Suwa Yorishige (posthumous name:Suwa-goryōnin (諏訪御料人?, real name unknown)). Katsuyori's children included Takeda Nobukatsu and Katsuchika.
He defeated Hojo Tsunashige in the 1569 Siege of Kanbara and successfully took a Tokugawa clan possession in the 1572 Siege of Futamata, and participated in the Battle of Mikatagahara.
Katsuyori, first known as Suwa Shirō Katsuyori (諏訪四郎勝頼?), succeeded to his mother's Suwa clan and gained Takatō Castle as the seat of his domain.
After his elder brother Takeda Yoshinobu died, Katsuyori's son Nobukatsu became heir to the Takeda clan, making Katsuyori the true ruler of the Takeda clan.
He took charge of the family after the death of Shingen and fought Tokugawa Ieyasu at Takatenjin in 1574 and at Nagashino in 1575. He captured Takatenjin, which even his father could not; this gained him the support of the Takeda clan, but he suffered a terrible loss at Nagashino, succumbing to one of the earliest recorded uses of volley fire (Oda Nobunaga's 3000 guns), in which he lost a large part of his forces as well as a number of his generals.