Aggregate and solitary zooids of salps were collected from April 2001 to June 2009. By the analyses based on the morphological characteristics, four species in the genus Cyclosalpa of the subfamily Cyclosalpinae are identified as new records in Korean waters: Cyclosalpa affinis (Chamisso, 1819), Cyclosalpa bakeri Ritter, 1905, Cyclosalpa sewelli Metcalf, 1927, and Cyclosalpa polae Sigl, 1912. These species are re-described with illustrations and photographs in this study. In addition, a key to species of the genus Cyclosalpa in Korean waters and a key to the life cycles of Salpida are provided. As a result of this study twelve species in the Salpidae have been reported from Korea until now.