Aaron Lufkin Dennison, American businessman, co-founded the Waltham Watch Company (died 1895)

Aaron Lufkin Dennison was an American watchmaker and businessman who founded a number of companies.

The Waltham Watch Company, also known as the American Waltham Watch Co. and the American Watch Co., was a company that produced about 40 million watches, clocks, speedometers, compasses, time delay fuses, and other precision instruments in the United States of America between 1850 and 1957. The company's historic 19th-century manufacturing facilities in Waltham, Massachusetts have been preserved as the American Waltham Watch Company Historic District.