Pseudogastromyzon is a genus of ray-finned fish belonging to the family Gastromyzontidae, commonly called the hillstream loaches, although this also refers to the loaches in the family Balitoridae. The loaches in this genus are found in fast-flowing streams and rivers in China.
There are currently 4 recognized species in this genus:
The species P. daon, P. elongatus and P. loos are of uncertain taxonomic status.