Mendelssohn is a crater on Mercury. Its name was adopted by the International Astronomical Union (IAU) on April 24, 2012. Mendelssohn is named for the German composer Jakob Ludwig Felix Mendelssohn.

The floor of Mendelssohn is covered by smooth plains materials which are created by extrusive volcanism.A Tale of Two Terrains, NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington. January 8, 2013.

A confirmed dark spot is present in north-central Mendelssohn, around a crater of 19 km diameter. The crater excavated low reflectance material (LRM).Zhiyong Xiao, Robert G. Strom, David T. Blewett, Paul K. Byrne, Sean C. Solomon, Scott L. Murchie, Ann L. Sprague, Deborah L. Domingue, Jörn Helbert, 2013. Dark spots on Mercury: A distinctive low-reflectance material and its relation to hollows. Journal of Geophysical Research Planets. doi.org/10.1002/jgre.20115 Hollows are present within the crater.

On the east rim of Mendelssohn is the crater Berry.

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