Oyamada Nobushige (小山田 信茂, 1545 – April 16, 1582) was a Japanese samurai general in the Takeda army under Takeda Shingen, and later under Takeda Katsuyori.^[1] He was known as one of the "Twenty-Four Generals of Takeda Shingen".

He was also lord of Iwadono Castle, and fought under the Takeda at the battles of Kawanakajima, Mikatagahara,^[2] Nagashino and Tenmokuzan.

Oyamada betrayed Takeda Katsuyori in 1582, after Katsuyori's defeat at the Battle of Tenmokuzan;^[3] however, when he went to the Oda clan camp, he was executed by Oda Nobunaga's officer Horio Yoshiharu.