Catalán is a small lunar impact crater that lies almost along the southwest limb of the Moon.

At this position the crater is ill-suited for observation from the Earth as it is viewed almost from the side, and visibility is subject to libration effects.

This region is located in the outer southeastern part of the skirt of ejecta that surrounds the Mare Orientale impact basin, and the nearby surface is rugged and streaky.

This crater is named after the Spanish scientist Miguel Antonio Catalán Sañudo (1894–1957) for his contributions to spectroscopy, an important exploratory tool in astronomy.

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