Acteocina infrequens, common name the Magdalena barrel bubble, is a species of small sea snail, a marine opisthobranch gastropod mollusk in the family Acteocinidae, the barrel bubble snails.

The small, slender shell has a subcylindric shape.

The spire is short but distinctly turreted.

The outer lip is straight, rounding below into the thickened columella which has a strong plait with a groove behind it.

[2] This marine species occurs in Magdalena Bay, Lower California; off Baja California to Pacific Panama.