Mary Alice McWhinnie (August 10, 1922 – March 17, 1980) was an American biologist, professor at DePaul University and an authority on krill from Chicago, Illinois She was the first woman to sail for two months in Antarctic waters aboard the NSF's research vessel, USNS Eltanin.
The National Science Foundation eventually allowed her to winter over at McMurdo Station and in 1974, she became the first American woman to serve as chief scientist at an Antarctic research station.