西宝芋螺（学名：Conus sieboldii）为芋螺科芋螺属下的一个种。

Conasprella sieboldii, common name Siebold's cone, is a species of sea snail, a marine gastropod mollusk in the family Conidae, the cone snails and their allies.

Like all species within the genus Conasprella, these cone snails are predatory and venomous. They are capable of "stinging" humans, therefore live ones should be handled carefully or not at all.