Maxacteon flammeus is a species of small sea snail, a marine opisthobranch gastropod mollusk in the family Acteonidae, the barrel bubble snails.

Its ground color is white, covered with transverse striae and longitudinal waving reddish lines, often divided into three portions in their length.

The conoid spire is canaliculated, composed of six whorls, the upper ones very approximate, the lowest much larger than all the others.

The oblong aperture is widened, dilated at its base.

This species occurs in the Red Sea, in the Indian Ocean off Madagascar, Mauritius and the Mascarene Basin; in the tropical West Pacific; also off Tonga, New Zealand.and Australia (Western Australia).