The ophiuroids collected from 13 localities in the vicinity of Cheiu Island during the period from July, 1965 to October, 1991 were observed for the systematic study on the basis of external features. As a result 26 species belonging to 11 families and 2 orders were identified, of which 5 species are neurly reported in Korean fauna and 6ey are as follows: Ophiomyxa austrolis, Ophioccnfho leuispino, Ophiactis dyscrita, Ophiocentws uenicillotus, Ophiorochnella infemolis. The ophiuroids distributed so far in Cheiu Island turned out to be 30 species.