Jock Truman (1920-2011) was an art collector, dealer, and gallery owner in New York, New York. Truman was born in Minneapolis, Minnesota, the son of Curtis Truman and Athelyn Amundsen Truman. He attended the University of Cincinnati from 1938 to 1941 and served in the U.S. Armed Forces in Brazil from 1942 to 1946. From 1946 to 1950 he attended the Harvard Graduate School of Design where he studied with Josef Albers, Gyorgy Kepes, and Hyman Bloom. During the 1950s he owned Thirty-Five River St. Inc., a Boston firm specializing in architectural and interior design.
Truman worked at Robert Isaacson Gallery for four years before moving to Betty Parsons Gallery, where he worked from 1961 to 1974. There he gained specialist knowledge regarding the work of Ad Reinhardt and assisted Reinhardt's widow in the evaluation of artworks after the artist's death. In 1974 he served as director of Parsons Gallery and he and Betty Parsons opened the Parsons-Truman Gallery, which operated as a joint venture from 1975 to 1976. In 1976 he opened Truman Gallery at 38 East 57th St. The gallery closed in 1979.
In 1989 Truman and his companion of over 30 years, Eric Green, moved to Miami. Truman and Green had a large collection of art which they donated to various museums including the Bass Museum of Art and the Museum of Contemporary Art in North Miami.