Emil William Breitkreutz (November 16, 1883 – May 3, 1972) was a US middle distance runner who won a bronze medal in the Olympic 800 meters final in the 1904 Summer Olympics in St. Louis, Missouri.
The race was won by James Lightbody.
Breitkreutz attended the University of Southern California, where he became the first USC athlete to compete in the Olympics. He graduated in 1906.
He was also a USC Trojans basketball coach.