Aldrin is a tiny impact crater located on the southern part of the Mare Tranquillitatis, to the east of Sabine crater. It is located about 50 kilometers to the northwest of the Apollo 11 landing site. Aldrin is the western-most of a row of three craters named in honor of the Apollo 11 crew members. About 30 kilometers to the east is the landing site of the Surveyor 5 lunar probe.

This crater was previously identified as 'Sabine B' before being named by the IAU.