Infundibulum is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.

The base of the shell is nearly flat, or concave.

The outer surface is smooth, costate or granular.

The columella is inserted in the center of the axis.

It is more or less folded above, its edge straight, oblique, not toothed, and without a notch at its base.