is a Japanese industrial designer, illustrator, and managing director of the industrial design company . He also works as a design consultant for Kyushu Railway Company (JR Kyushu).
Mitooka graduated from Okayama Technical High School in 1965.
After graduating from high school, Mitooka worked at Studio Silvo Coppola in Italy before founding Don Design Associates in 1972. The company oversees design projects for buildings, interiors, railway vehicles, graphics, and products.
In October 2011, Mitooka was awarded the 59th Kikuchi Kan Prize, presented annually by Bungei Shunju literary magazine and the Society for the Advancement of Japanese Culture.