Methanococcoides is a genus of archaeans in the family Methanosarcinaceae.
Methanococcoides species are methanogens entirely dependent on methylated compounds for nutrition. The type species of Methanococcoides is Methanococcoides methylutens.
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI).