Amberjacks of the genus Seriola (Japanese amberjack S. quinqueradiata, greater amberjack S. dumerili and yellowtail amberjack S. aureovittata) are most important fish resources, caught and cultured in Japan. Eight species of parasites are known to infect the skeletal muscle of Japanese Seriola spp.: the microsporidian Microsporidium seriolae, the myxozoans Kudoa amamiensis, Kudoa megacapsula and Unicapsula seriolae, the digenean Hirudinella ventricosa, the cestode Protogrillotia zerbiae and the nematodes Philometroides seriolae and Anisakis pegreffii. They induce detrimental effects on the quality of the muscle tissue and lower marketable value due to anesthetic appearances. Additionally, U. seriolae and A. pegreffii may cause food poisoning and zoonosis, respectively. In this paper, literature of these parasites from wild and cultured Seriola spp. is reviewed, and current status of their studies and issues are discussed.