The objective of the study was to evaluate the species composition of Cladocera and Copepoda in intensive brackish water shrimp ponds. The study was conducted in 6 shrimp ponds including 3 black tiger shrimp ponds and 3 whiteleg shrimp ponds at Vinh Trach Dong commune, Bac Lieu city, Bac Lieu province. The results showed that the water environmental parameters in shrimp ponds, such as temperature, pH, salinity, TAN, NO3 - , PO4 3- , TN, TP, and chlorophyll-a were in the suitable range for shrimp. A total of 34 zooplankton species were recorded in shrimp ponds, of which cladocera (1 species) and Copepoda (4 species) accounted for a very low proportion. The abundance of Copepoda (including nauplius larvae) ranged from 19,112 to 169.778 ind.m- ³ and Cladocera from 0 to 2,650 ind.m-3 . Zooplankton species recorded were Acartia clausi, Apocylops sp., Microsetella norvegica, Schmackeria dubia (Copepoda), and Moina sp. (Cladocera). Schmackeria dubia and nauplius larvae were predominant in both black tiger and whiteleg shrimp ponds. Shrimp productivity was positively correlated (p>0.05) with the Copepoda density. The development of Copepoda contributed to an increase in shrimp production.