Ichthyophis elongatus, the elongated caecilian, is a species of amphibians in the family Ichthyophiidae endemic to Sumatra, including some nearby islands; however, whether these belong to this species is uncertain.
Specimens allocated to this species with certainty have been collected from lowland forest and from a ravine near degraded forest.
The type series varied in total length. It is relatively slim, with body width of .