Objective: The purpose of this study was to analyze the fatty acid from Mactra veneriformis. Method: The fatty acid in flesh was extracted by the method of Bligh-Dyer. Fatty acid was methyl esterified and then analyzed by gas chromatography-mass spectrometry. Result: Twenty\|two components were identified

representing 82.51% of the total constituents

in which the saturated fatty acid represent 24.35% and the unsaturated fatty acid represent 58.16%. The major components in saturated fatty acid were octadecanoic acid and hexadecanoic acid

the major components in unsaturated fatty acid were 9

12-hexadecanoic acid

11-eicosenoic acid

tetradecenoic acid and 5

8

11

14-eicosatetraenoic acid. Conclusion: M. Veneriformis is rich in facty acid and can be developed in the future.