Two gillnet surveys were conducted in Central and Southeastern waters of Vietnam in 2011 and 2012, representative for the northeast monsoon and southwest monsoon seasons. The coverage of the surveys was from latitude 7°00N-15°00N and cut- off eastward by the longitude of 112°00E with sixty fixed sampling stations designed using parallel tracsects. The net consists of four different mesh sizes, which was 2a=73 mm, 85 mm, 100 mm and 123 mm. Sampling hauls were carned out at night and the setting depth of the net was 4.5 m from surface. 111ere was a total of 109 species belonging to 79 genera in 42 families identified during the surveys. Bigtooth pomfret, skipjack tuna, frigate tuna, kawakawa and common dolphinfish appeared frequently in the sampling stations. The catches was pre-dominanedt by skipjack tuna with the catch ratio ranges from 22.9-47.1 percent and 18.2-41.9 percent of the total in the northeast and southwest monsoon season, respectively. There are different in catch composition between two monsoon season patterns but no significant was found in the catch rates. Results also indicated that the pelagic fish resources in central and southeastern waters of Vietnam seemed to be declining with the periods from 2000-2005.