Rhabdophis hmongorum, also known as the H'mong keelback snake, is a species of colubrid snake. It was discovered on Mount Fansipan in Vietnam.
The snake was found in a dry stream on Mt. Fansipan, about northwest of Hanoi.
The snake was described as "metallic purple", and has an iridescent underbelly. It is around in length.
It is possible that the snake's range may cross Vietnam's border into China, but there is not enough evidence to support this claim.