Olbers is a lunar impact crater that lies at the west edge of the Oceanus Procellarum, near the western limb of the Moon.

It lies to the northwest of the crater Hevelius, and to the north of the indistinct Hedin.

The rim of Olbers is somewhat worn, with notches to the north, east, and south.

The interior floor is relatively flat, especially toward the eastern rim, and is not marked by notable craterlets.

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