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

The umbilicate shell has a depressed conical shape with a swollen base.

Its color is a vivid white with green spots.

It contains 6½ sharp declining whorls with longitudinal oblique striae and spiral ribs.

This species occurs in the Red Sea and in the Indian Ocean off Tanzania and South Africa.