Daiei Seisakusho (株式会社大永製作所 Kabushikigaisha Daiei Seisakusho = Daiei Manufacturing Inc.) is a Japanese video game developer. Little is known about the company. They usually worked with Taito.
Noboru Koshinaka and Isao Mizuguchi are the only composers credited on Daiei's NES titles. Noboru's name has appeared in a ROM for sound, so he is assumed for creating the sound driver.