Maclaurin is a lunar impact crater that is located in the eastern part of the Moon's near side.

It lies just to the southeast of the small Mare Spumans, and to the northeast of the prominent crater Langrenus.

The inner walls cut down to a gently descending slope that extends toward the flattened midsection.

The middle portion of the interior floor has been resurfaced, possibly by basaltic lava, leaving a lower albedo patch with a slightly darkened hue.

By convention, these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Maclaurin.