Data on the vascular flora of the Zhuzhmuji Archipelago, White Sea (Karelia) is analysed. Known flora of the archipelago comprises 237 vascular plant species, including 208 (88%) native and 29 (12%) adventitious ones. The archipelago flora has the parameters typical of White Sea islands — relative paucity of the species composition, greater proportion of northern-provenance species compared to mainland floras, and low participation of adventitious species because it is difficult for diaspores from the mainland to reach the islands. The checklist of species detected is provided for each of the three islands.