As a continuation of part Ⅰ, this paper deals with the classification of phytoplankton species collected from Chawol-do, Soya-do and Pung-do of Kyonggi-Bay. One hundred and fortythree kinds of phytoplankton from this area were identified and classified by Engler`s system into 17 families, 47 genera, 129 species, 10 varieties and 4 forms, belonging to 2 phyla, 3 classes, 3 subclasses, 8 orders and 1 suborder. 3 families, 7 genera, 10 species, 3 varieties and 3 forms are added. To the list published in part Ⅰ. Seven species and one form described in this paper are new to Korea.