Cajal (crater)
 Cajal is a tiny lunar impact crater on the northern part of the Mare Tranquilitatis in memory of the Spanish doctor and Nobel laureate Santiago Ramón y Cajal. It is a circular cup-shaped formation that lies to the southeast of the lava-inundated crater Jansen. Cajal was formerly designated Jansen F prior to renaming by the IAU. Also to the northwest is a system of wrinkle ridges designated the Dorsa Barlow.