Hargreaves is a lunar impact crater that lies in the eastern part of the Moon, to the east of the Mare Fecunditatis.

[1] Just to the southeast is Morley, and to the west is Webb.

This crater has nearly merged with the larger Maclaurin H to the north, and the interior of both formations has been flooded by lava.

As a result, Hargreaves is now an amphitheater-like formation with a wide gap in the northern rim.

There is a slight notch in the southern rim, and a small craterlet is attached to the western outer rim.