Harry Lester Adams (October 1, 1880 – August 12, 1968) was an American sport shooter who competed in the 1912 Summer Olympics and in the 1920 Summer Olympics. In 1912, he won the gold medal as member of the American team in the team military rifle competition. In the 1912 Summer Olympics he also participated in the following events:
Eight years later, he participated in the 300 metre military rifle, prone event, but his place is unknown. He was born in Medway, Massachusetts.