Nanogomphodon is an extinct genus of synapsid which existed in Germany during the Middle Triassic period. Nanogomphodon were small herbivorous traversodontid gomphodonts. The type species is Nanogomphodon wildi. They are only known from a few isolated teeth recovered in 2006 from the Erfurt Formation of Baden-Württemberg, Germany. The name comes from Greek for "dwarf peg tooth"; from νάνος (nanos, 'dwarf'), γόμφος (gómphos, 'peg' or 'nail'), and ὀδούς (odoús, 'tooth').