Three new lignan glycosides were isolated from the bark of Eucommia ulmoides OLIV. (Eucommiaceae). Their structures were established as (-)-olivil 4', 4"-di-O-β-D-glucopyranoside (1), (+)-1-hydroxypinoresinol 4', 4"-di-O-β-D-glucopyranoside (2) and (+)-medioresinol 4'-O-β-D-glucopyranoside (named eucommin A) (3), based on chemical evidence and spectroscopic studies. A known lignan glycoside, (+)-syringaresinol O-β-D-glucopyranoside (4) was also isolated.