Nancy Jane Currie-Gregg (née Decker; former married names Sherlock and Currie; born December 29, 1958) is an American engineer, United States Army officer and a NASA astronaut. Currie-Gregg has served in the United States Army for over 22 years and holds the rank of colonel. With NASA, she has participated in four space shuttle missions: STS-57, STS-70, STS-88, and STS-109, accruing 1,000 hours in space. She currently holds an appointment as a professor of practice in the Department of Industrial & Systems Engineering at Texas A&M University.