Schjellerup is a lunar impact crater that is located in the far northern latitudes on the Moon's far side.

To the northwest of Schjellerup is the crater Seares and to the south-southeast lies Avogadro.

This is a reasonably well-preserved crater that has undergone only a marginal degree of wear from subsequent impacts.

The interior floor is relatively level with the exception of some low hills clustered around the midpoint.

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