Studio Deen Co., Ltd. (Japanese: 株式会社スタジオディーン, Hepburn: Kabushiki-gaisha Sutajio Dīn; sometimes stylized as Studio DEEN) is a Japanese animation studio founded in 1975 by former Sunrise producer Hiroshi Hasegawa, along with a team of ex-Sunrise animators. The studio owns three subsidiaries: Danny Donghua (丹尼動画), a Chinese sub-contracting studio; Megumi (め組), a digital work sub-contracting studio; and Umidori (うみどり), a 3DCG sub-contracting studio. Studio Deen has been operating as a subsidiary of IMA Group since April 2011.