Barry Eugene "Butch" Wilmore (born December 29, 1962) is an American NASA astronaut and United States Navy test pilot. He has had three spaceflights, the first of which was an 11-day Space Shuttle mission in November 2009, to the International Space Station. Wilmore was designated as pilot with five other crew members on Space Shuttle Atlantis for the mission STS-129. He served as part of Expedition 41 to the International Space Station, and in 2024 returned to the ISS on the Boeing Crew Flight Test, the first crewed mission of the Boeing Starliner. As of December 2024, he is in space and is set to return to Earth no earlier than late March of 2025 on a new SpaceX Dragon capsule.