A computer-based image database for freshwater algae recorded in Turkey has been established. A separate page was preparedfor each algal taxon and each page includes images and taxonomic and ecological information related to the taxon. Algal images wereobtained mainly from authors of algal studies previously carried out in various freshwater bodies in Turkey. Data were then standardizedin accordance with that of the central database of Turkish herbaria and a database for Turkish freshwater algae, which were previouslyestablished through TÜBİTAK projects. Te database program Access was used to enter data, as this program recognizes Turkishcharacters. A total of 627 data with images were installed in the database. Tese belonged to Bacillariophyta (202 data), Chlorophyta (255data), Chrysophyta (3 data), Cryptophyta (2 data), Cyanophyta (87 data), Dinophyta, (12 data), Euglenophyta (61 data), Prasinophyta (1datum), Rhodophyta (1 datum), and Xanthophyta (3 data).