The　antioxidant　activities　of　ethanolic　crude　extract　(LPCE)　and　its　four　different　solvent　sub-fractions　(namely,　diethyl　ether　fraction　(LPDF),　ethyl　acetate　fraction　(LPEF),　n-butyl　alcohol　fraction　(LPBF)　and　residue　fraction　(LPR))　from　longan　pericarps　were　investigated　employing　various　systems　including　2,　2-diphenyl-1-picrylhydrazyl　(DPPH)/　2,　2＇-amino-di(2-ethyl-benzothiazoline　sulphonic　acid-6)ammonium　salt　(ABTS)/hydroxyl　radical　scavenging　activity,　total　phenolic　content　and　reducing　power.　Each　extract　showed　concentration-dependent　antioxidant　activity.　LPEF　showed　the　highest　scavenging　activity　against　DPPH,　ABTS　and　hydroxyl　radicals　with　EC50　values　of　0.506,　0.228　and　4.489　mg/mL,　respectively.　LPEF　showed　the　highest　reducing　power　with　EC50　values　of　0.253　mg/mL.　The　next　was　LPDF　with　EC50　values　of　0.260　mg/mL.　LPEF　possessed　the　highest　total　phenolic　content　(230.816　mg/g,　expressed　as　gallic　acid　equivalents),　followed　by　LPDF,　LPBF,　LPCE　and　LPR.　The　results　suggested　that　longan　pericarp　fractions　possessed　significant　antioxidant　activities　and　could　be　a　promising　source　of　natural　antioxidant.