Selenopeltis () is an extinct genus of odontopleurid trilobites in the family Odontopleuridae.
Species in the genus Selenopeltis can reach a length of and a width of . These trilobites show long pleural spines and were a low-level epifaunal detritivore. They lived in the Ordovician period, from the Lower Arenig stage age until the Ashgillian age (478.6-443.7 million years ago).
During the Ordovician they inhabited Czech Republic, France, Morocco, Portugal, Spain and the United Kingdom. During the Arenig they lived in France and the UK.