Oppenheimer is a large lunar impact crater that lies on the Far side of the Moon.

It lies along the western outer rampart of the immense walled plain Apollo.

Nearby features of note include the dark-floored crater Maksutov to the southwest, and Davisson to the west-southwest.

The outer rim of Oppenheimer is very nearly circular, but is broken in several locations by small craters.

[2] By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Oppenheimer.