Joseph E. Boyer (1848 – October 24, 1930) was a Canadian-American inventor and computer industrialist. Boyer was President of the J. Boyer Machine Co. in St. Louis, Missouri. He helped William Seward Burroughs I develop the adding machine and was the inventor of the first successful rivet gun. As the third president of the American Arithmometer Company, in the first of a series of business moves designed to eliminate the competition, in 1903 he secretly agreed to acquire the Addograph Manufacturing Company. Then in 1905 Boyer relocated the entire company from St. Louis to Detroit, Michigan at which point the company name was changed to the Burroughs Adding Machine Company. He served as president until 1920.