Polemon gracilis, or the graceful snake-eater, is a species of mildly venomous rear-fanged snake in the family Atractaspididae.

Dorsal scales smooth, without apical pits, arranged in 15 rows.

Nostril in a single nasal, which is in contact with the preocular and separated from the rostral by the first upper labial, which forms a suture with the internasal.

Only one pair of chin shields, separated from the mental by the first lower labial.

Maxillary short, with few teeth, the last feebly enlarged and grooved, situated below the eye.