The main objective of this paper to investigate the diversity of common zooplankton inhabiting inland waters of North West region (Tabuk) of Saudi Arabia. The study covered 76 sites. The results revealed the presence of 38 taxa belonging to phylum Arthropoda and Rotifera. Based on the frequency of occurrence, taxa recorded could be ordered into: constant, accessory and accidental taxa. The constant taxa recorded were represented by one taxon namely: Family Chironomidae. The accessory taxa were represented by 4 taxa: Ostracoda, Diptera pupae, Cyclopoida (Copepoda), and Culicidae larvae. The accidental taxa were represented by the rest of taxa (33 taxa).