Vexillum obeliscus, common name the obelisk mitre, is a species of small sea snail, marine gastropod mollusk in the family Costellariidae, the ribbed miters.

The shell is yellowish brown, encircled with a single white line.

[2] The shell is chestnut-brown, with a central white band, and sometimes an inferior narrower one.

[3] The shells are extremely variable in sculpture and other morphological features.

[4] This species is distributed in the Red Sea and in the Indian Ocean along the Mascarene Basin and Madagascar; in the Pacific Ocean along New Guinea, New Caledonia, Fiji and the Solomons Islands.