Heliotrygon is a genus of freshwater stingrays in the family Potamotrygonidae.

The genus is endemic to the Amazon basin in South America.

[1] They mainly live in deep river channels, but approach the shore at night to feed on fish.

[2] Their discs are very circular in shape (including the snout), and they have tiny eyes and a relatively short tail with an essentially harmless, vestigial stinger (sometimes even lacking).

[2] Both species are greyish or brownish above, but while H. gomesi is overall plain without distinct markings, H. rosai has a white to creamy-white vermiculated pattern.