Piazzi Smyth is a small lunar impact crater in the eastern part of the Mare Imbrium.

[1] This is an isolated feature located about 100 kilometers to the southwest of the Montes Alpes mountain range.

This crater is a nicely circular feature with a rim and interior that have not been significantly modified by impacts.

This formation has no other notable features, and its albedo matches the surrounding lava plain.

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