Arthur Clarence Pillsbury (1870–1946) was a United States photographer, best known for landscapes of Yosemite National Park, photos of the 1906 San Francisco earthquake, and time lapse photography of flowers. The son of physicians, Pillsbury was born in Medford, Massachusetts His family relocated to Auburn, California in 1883, and he became a student at Stanford University. In 1895, he rode to Yosemite by bicycle.