Kenneth Duane "Sox" Bowersox (born 14 November 1956) is an American astronaut, a veteran of four space shuttle missions and an extended stay aboard the International Space Station.

Raised in Bedford, Indiana, Bowersox is an Eagle Scout. Bowersox attended the United States Naval Academy and earned a degree in aerospace engineering before receiving his commission in 1978. He served as a test pilot on A-7E and F/A-18 aircraft, and was selected as an astronaut candidate in 1987. Bowersox holds the rank of Captain in the United States Navy. Borwer first flew as a pilot on the space shuttle missions STS-50 and STS-61, and commanded missions STS-73, a microgravity research mission and STS-82, a Hubble Space Telescope repair mission. With Don Pettit and Nikolai Budarin, Bowersox was a member of ISS Expedition 6 in 2002 and 2003.

Bowersox appeared on three episodes of the American TV show Home Improvement.