Rhizophora apiculata and Rhizophora mucronata are the mangrove plants of the genus Rhizophora. The chemical constituents of leaf samples for both species were analyzed by using Gas Chromatography-Mass Spectrometry (GC-MS). The analysis of chemical constituents of Rhizophora apiculata was found to be rich in 2-(2- ethoxyethoxy)ethanol (26.45%) and Kaur-16-ene (3.37%). Benzophenone (16.09%) and 2-(2-ethoxyethoxy)ethanol (7.82%) were the predominant constituents in Rhizophora mucronata.