Mary is a tiny lunar impact crater located in the southeastern part of the Mare Serenitatis on the near side of the Moon. It lies to the northeast of the small crater Dawes and to the west of the Montes Taurus range. To the east-northeast of this position is the landing site of the Apollo 17 mission, in the Taurus–Littrow valley.
The crater has a diameter of approximately 0.53 km (530 meters). Its depth is not known. Its selenographic coordinates are 18.93°N, 27.39°E.
The name "Mary" was officially approved by the International Astronomical Union (IAU) in 1976. The name is derived from an English feminine name and does not commemorate a specific individual. It was approved alongside the nearby craters Isis, Robert, Osiris, and Jerik.
The crater was documented through high-resolution photography from NASA's Apollo missions, including an oblique southward-facing view captured by Apollo 15 and imagery from Apollo 17.
