John James Stevenson (October 10, 1841 - August 10, 1924), better known as J.J. Stevenson, was a geologist and academic who played an important role in developing the field of geology in the United States. Stevenson was born in New York and attended New York University and then became a professor of chemistry at West Virginia University before returning to his alma mater to teach geology. Throughout the 1870s and early 1880s, he spent time with the still-evolving U.S. Geological Survey as well as the Pennsylvania Geological Survey. Later, in 1898, he served as president of the Geological Society of America. A prolific scholar, Stevenson published dozens of works over his long career.