The present study provides account of the angiosperms of CAS in Marine Biology campus, Parangipettai taluk, Cuddalore district in Tamil Nadu state at India. The Cuddalore district which comes under the coastal region of Tamilnadu is one of the important areas in the state as far as plant distribution is concerned. The extensive survey of the area conducted during 2017- 2019, it is result in total of 110 species belonging to 92 genus under 48 families. Out of these, 95 species under 78 genera from 42 families belong to dicotyledons and 15 species under 14 genera from 5 families belongs to monocotyledons. From this study, 36 trees, 14 Shrubs, 48 Herbs and 12 climbers are come under 110 species. Fabaceae (9 spp.) comprises of the maximum number of species, followed by Euphorbiaceae (7 spp.), Apocynaceae (5 spp.), Malvaceae (5 spp.), Amaranthaceae; Caesalpiniaceae; Lamiaceae; Phyllanthaceae; Solanaceae are (4 spp.) and other families are occupied 3, 2 and 1. Some of the largest genera in the area are Fabaceae (8 spp.), Euphorbiaceae (7 spp.), Apocynaceae (5 spp.), Caesalpiniaceae (4 spp.) and other families are 3, 2 and 1. The entire campus is chiefly dominated by Mangrove trees such as Rhizophora mucuronata Lam, Rhizophora apiculata Bl, Avicennia marina (Forssk.) Vierh, Avicennia officinalis L and Excoecaria agallocha L.