Hornsby (crater)
 Hornsby is a tiny lunar crater in the western part of the Mare Serenitatis a lunar mare in the northeast quadrant of the Moon's near side. It is a solitary formation that is located at least 100 kilometers from any significant craters although the curiously shaped depression Aratus CA lies about 50 km to the west-northwest. To the north-northwest is Linné a feature notable for its skirt of high-albedo material. To the west of Hornsby is the wrinkle ridge named Dorsum Von Cotta.