Three iridoid glucosides and a lignan glucoside were isolated from the dried leaves of Avicennia alba BI. (Avicenniaceae), including geniposidic acid (1), a mixture of 2'-O-[(Z)-4'-methoxycinnamoyl]mussaenosidic acid (2), 2'-O-[(E)-4'-methoxycinnamoyl]mussaenosidic acid (3), and syringaresinol 4-O-beta-D-glucopyranoside (4). Their chemical structures were elucidated by spectroscopic methods as well as compared with data in the literature. These substances were isolated for the first time from this genus.