A new hydrolysable tannin was isolated from dried fruits of Melaleuca leucadendron and characterized as 1,2- di - O- galloyl - 3 - O- digalloyl- 4,6- O- (S)- hexahydroxydiphenoyl-β- D- glucose, based on the chemical and spectral evidence. Nine known hydrolysable tannins, as well as known stilbene glycosides and triterpenes, were also isolated.