Millerigobius macrocephalus is a species of goby native to coastal waters of the Adriatic Sea, the Levant Sea, the western Mediterranean and the Aegean Sea where it occurs in lagoons and shallow inshore waters to about 4 metres (13 ft) in depth with stones to provide shelter. This species can reach a length of 4.3 centimetres (1.7 in) SL. It is currently the only known member of its genus.