Isaac Davis (February 23, 1745 – April 19, 1775) was a gunsmith and a militia officer who commanded a company of Minutemen from Acton, Massachusetts, during the first battle of the American Revolutionary War. In the months leading up to the Revolution, Davis set unusually high standards for his company in terms of equipment, training, and preparedness. His company was selected to lead the advance on the British Regulars during the Battle of Concord because his men were entirely outfitted with bayonets. During the American advance on the British at the Old North Bridge, Davis was among the first killed and was the first American officer to die in the Revolution.