In this study, the alkaloid compounds of Ricinus communis have been evaluated. The chemical compositions of the leaf ethanol extract of R. communis were investigated using gas chromatography-mass spectroscopy (GC-MS). GC-MS analysis of R. communis alkaloid leaf ethanol extract revealed the existence of the n-haxadecanoic acid, octadecanoic acid, 1-hexadecanol. 2-Methyl, gibb-3-ene-1. 10decarboxylic acid , 2,4a. 7trihydroxy-1-methyl-8-methylene, 1.4a-lactone. 10-methyl, L-valine, ethyl ester, hexadecamethyl, tetradecamethyl, octadecamethyl, butanedioic acid, hydroxyl. diethyl ester, 1.1.3.3.5.5.7.7.9.9.11.11.13.13.15.15 hexadecamethyl, triethyl citrate, diethyl phthalate, and 3-octadecene.