Lubiniezky is a lava-flooded lunar impact crater on the northwest edge of Mare Nubium.

[1] This feature is most readily located by finding the prominent crater Bullialdus to the southeast.

The floor of Lubiniezky has been resurfaced by basaltic lava, which most likely entered from the surrounding mare through the gap in the southeast wall.

The surviving rim forms a curved, worn rise around the relatively flat and featureless inner floor.

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