Coulomb is a lunar impact crater that lies behind the northwestern limb, on the far side of the Moon.

The rim of this crater is mildly eroded, but still retains a well-defined edge and displays some old terracing on the wide inner walls.

Only a few tiny craterlets mark this interior plain, and a small crater near the south-southeast inner wall.

Coulomb lies within the Coulomb-Sarton Basin, a 530 km wide impact crater of Pre-Nectarian age.

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