Joseph Amasa Munk (November 9, 1847 – December 4, 1927) was a Los Angeles, California physician who had an interest in a Willcox, Cochise County, Arizona ranch, who became greatly interested in the history and lore of Arizona. He accumulated a large and important collection of books about Arizona, which he donated to the University of Arizona in Tucson. (The collection was later acquired by the Southwest Museum in Los Angeles.) He also wrote a copiously illustrated guide, Arizona Sketches, to some of the more important landmarks in the state.