Myrtle Mary Young Hobart, painter and printmaker, was born in Eureka, California on 25 August 1873. She attended the California College of Arts and Crafts (now the California College of the Arts), and California School of Fine Arts (later the San Francisco Art Institute). During the 1920s she headed the art department at Mission High School in San Francisco and had an interior decorating studio on Sutter Street with her husband, artist Clark Hobart. They often exhibited together and collaborated on projects.

Hobart was a member of and exhibited with the Pacific Art Association, the San Francisco Society of Women Artists, the San Francisco Art Association, and the Society of Western Artists.

Her work was exhibited in the San Francisco Art Association annuals from 1916, the de Young Museum in 1916, Paul Elders Gallery in San Francisco in 1919, the City of Paris in San Francisco in 1924, the Berkeley League of Fine Arts in 1924, and the Golden Gate International Exposition in 1939.

Myrtle Mary Hobart died in San Francisco, California on 19 January 1946.