Richard Dean Tuttle (born 1941 in Rahway, New Jersey) is an American postminimalist artist known for his small, subtle, intimate works. His art makes use of scale and line. Tuttle studied at Trinity College in Hartford, Connecticut and after moving to New York in 1963 he spent a semester at the Cooper Union and worked at the Betty Parsons Gallery. His works on paper are considered seminal works in American art. Tuttle had a survey exhibition in 1975 at the Whitney Museum of American Art.

In 2005, Tuttle had a major retrospective spanning his 40 year career at the San Francisco Museum of Modern Art. The exhibit traveled to the Whitney Museum of American Art in November, 2005. He is represented by Sperone Westwater in New York City and by Galerie Schmela in Düsseldorf and by Annemarie Verna Galerie in Zurich. He lives and works in New York City and New Mexico. He is married to the poet Mei-mei Berssenbrugge.