Дийн Л. Мичъл е роден през 1957 г. в Питсбърг, Пенсилвания и израства в Куинси, Флорида. Той е завършил Колумбския колеж по изкуства и дизайн (BFA, MFA), Колумбия, щата Охайо. Мичъл е известен с фигуративните си творби, пейзажи и натюрморти. В допълнение към акварелите, той използва и други медиуми - яйчна темпера, масло и пастел.
Мичъл е включен в многобройни публикации, които включват New York Times, Christian Science Monitor, Southwest Art, Art of the West, American Artist, Western Art Collector, Artists Magazine, Fine Art International , Art News, The Art of Watercolour magazine , Fine Art Connoisseur Magazine и най-скоро the Outwin 2016 American Portraiture Today at the National Portrait Gallery.
Неговото изкуство се намира в корпоративни и музейни колекции в цялата страна, включително: Autry National Center, Arkansas Art Center, Canton Museum of Art, Nelson-Atkins Museum of Art, Kemper Museum of Contemporary Art, Margaret Harwell Art Museum, Rockwell Museum, Nerman Museum of Contemporary Art, Beach Museum of Art, Phoenix Art Museum, Gadsden Art Center, Whitney Museum of the American West, Mississippi Art Museum, St. Louis Art Museum, Huntsville Museum of Art, Library of Congress and the Quanhua Art Museum in China.
Получил е над 600 награди, включително T.H. Saunders International Artists in watercolor competition in London, England, American Watercolor Society Gold and Silver Medal, National Watercolor Society Masters award, Allied Artist of American Gold Medal in Watercolor and Oil, Donald Teague Memorial Award and the Robert M. Lougheed Memorial Award Prix de West, Premier Platinum Award Buffalo Bill Center of the West , Art for the Parks $50,000 Grand Prize, Loa Ruth Spring Award from the National Watercolor Society, The Award of Excellence Shanghai Zhujiajiao International Watercolour Biennial Exhibition.
Дийн Л. Мичъл е представен от Astoria Fine Art, Jackson, WY., Cutter Fine Art, St. Augustine, FL.,Mac Gryder Gallery, New Orleans,LA. Marie Brooks Gallery, Quincy, FL., Hearne Fine Art, Little Rock, AR, Red Piano Gallery, Bluffton, SC. J. Willott Gallery, Palm Desert, CA and E & S Gallery, Louisville, KY.