Ramsay (crater)
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| Coordinates | 40°12′S 144°30′E / 40.2°S 144.5°E |
|---|---|
| Diameter | 81 km |
| Depth | Unknown |
| Colongitude | 216° at sunrise |
| Eponym | William Ramsay |

Ramsay is a lunar impact crater that is located on the Moon's far side. It lies to the south-southwest of the larger crater Jules Verne, and is nearly in contact with the satellite crater Jules Verne P along the northern outer rim. To the southeast of Ramsay is the crater Koch, and to the west-southwest lies the overlapping pair of Roche and Pauli.
This is a worn crater, although the rim retains a generally circular character and is marked only by tiny craterlets (except for a notch in the south-southeast). The interior floor is relatively featureless, with a low central rise near the midpoint.