The present study was carried out on Safari Park, Lahore, Punjab, Pakistan. The sampling was carried out randomly in different seasons from different water bodies of the park especially from Lake. Thirty-seven species belonging to six genera i.e., Pediastrum (4 species & 11% abundance), Trachelomonas (4 species & 11% abundance), Euglena (11 species & 30% abundance), Phacus (12 species & 32% abundance), Lepocinclis (1 species & 3% abundance) and (5 species & 13% abundance). All genera belong to kingdom Protista, two phyla i.e., Volvocophycota and Euglenophycota, two classes i.e., Volvocophyceae & Euglenophyceae, two orders chlorocoocales and Euglenales and three families i.e., Hydrodictyaceae, Euglenaceae and Naviculaceae.