Earl William Eby (November 18, 1894 – December 14, 1970) was an American sprinter who won a silver medal in the 800 m at the 1920 Summer Olympics.
Earlier at the 1919 Inter-Allied Games he won the 400 m event and placed second in the 800 m to New Zealand's Daniel Mason.
He won the 800 m event at the 1920 USA Outdoor Track and Field Championships.
He was born in Aurora, Illinois, but attended high school in Chicago, first Calumet High and then Loyola Academy.