Pseudominolia nedyma is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.

The wide and deeply umbilicate shell has a depressed-conical shape.

The spire is gradated, with five whorls with a dense spiral sculpture.

The body whorl increases rapidly in size.

It is regularly spirally sulcated and longitudinally crossed with dark spots.