Pseudohydromys is a genus of rodent in the family Muridae endemic to New Guinea.It contains the following species: * (Pseudohydromys berniceae) * (Pseudohydromys carlae) * Laurie's moss mouse (Pseudohydromys eleanorae) * One-toothed shrew mouse (Pseudohydromys ellermani) * Mottled-tailed shrew mouse (Pseudohydromys fuscus) * German's one-toothed moss mouse (Pseudohydromys germani) * Eastern shrew mouse (Pseudohydromys murinus) * Musser's shrew mouse (Pseudohydromys musseri) * Western shrew mouse (Pseudohydromys occidentalis) * Woolley's moss mouse (Pseudohydromys patriciae) * Southern small-toothed moss mouse (Pseudohydromys pumehanae) * White-bellied moss mouse (Pseudohydromys sandrae)