Cnesterodon is a genus of poeciliids native to South America.
Type species: Cnesterodon decemmaculatus
There are currently 10 recognized species in this genus:
- Cnesterodon brevirostratus
- Cnesterodon carnegiei
- Cnesterodon decemmaculatus
- Cnesterodon holopteros
- Cnesterodon hypselurus
- Cnesterodon iguape
- Cnesterodon omorgmatos
- Cnesterodon pirai
- Cnesterodon raddai
- Cnesterodon septentrionalis