Nintendo Research & Development 1

 (often abbreviated as Nintendo R&D1) was Nintendo's first internal development team. Its founding predates Nintendo's entry into the video game market, it being created to focus on the manufacturing of toy guns and other products. It was managed by Gunpei Yokoi for most of its existence. In addition to developing games, R&D 1 designed hardware, including the Game & Watch, the Game Boy, and the Virtual Boy.

In 2004, all of the R&D departments were dissolved due to a corporate restructuring. Most of the staff were folded into Nintendo EAD or the newly created Nintendo Software Planning & Development Group #1.

Notable members

 * Goro Abe
 * Takahiro Harada
 * Takehiko Hosokawa
 * Takehiro Izushi
 * Hiroji Kiyotake
 * Hirofumi Matsuoka
 * Ryuichi Nakada
 * Satoru Okada
 * Yoshio Sakamoto
 * Ko Takeuchi
 * Hitoshi Yamagami
 * Masao Yamamoto
 * Katsuya Yamano
 * Gunpei Yokoi