Plasmodium percygarnhami is a parasite of the genus Plasmodium subgenus Vinckeia. As in all Plasmodium species, P. percygarnhami has both vertebrate and insect hosts. The vertebrate hosts for this parasite are mammals.
The parasite was first described by Landau et al. in 1989.
This species is found in Madagascar.
The only known host is the lemur Lemur macaco macaco.