Heymans is a lunar impact crater that is located in the northern part of the Moon on the far side from the Earth.

It lies between the craters Poinsot to the north and Hippocrates slightly farther to the south.

This crater has been worn by subsequent impacts, but retains the general appearance of its original form.

But the rim is generally round and symmetrical, with a slightly narrower inner wall to the northeast.

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