Acteon dolichoroseus is a species of sea snail, a marine gastropod mollusc in the family Acteonidae.
The shell of Acteon dolichoroseus is relatively small, with a length that can reach up to 7 mm. The aperture is narrow, and the outer lip is thin and slightly flared.
Acteon dolichoroseus is found in the marine waters of the Indo-Pacific region. This species is known to inhabit shallow to moderately deep waters, typically at depths ranging from 10 to 50 meters.