Three new oleanane-type triterpene saponins (1, 2 and 3) were isolated from aerial parts of Gladiolus gandavensis, along with two known compounds (4 and 5). Their structures were elucidated as 29-O-($eta$-D-glucopyranosyl)-$2{eta}$,$3{eta}$-dihydroxyolean-12-en-28-oicacid(1), 3-O-($eta$-D-xylopyranosyl)-29-O-($eta$-D-glucopyranosyl)-12-en-28-oic acid (2), and $2{eta}$,$3{eta}$,29-trihydroxyolean-12-en-28-oic acid 28-O-[$eta$-D-glucopyranosyl($1{ ightarrow}2$)-($alpha$-L-rhamnopyranosyl($1{ ightarrow}6$))-$eta$-D-glucopyranosyl] ester (3), by spectroscopic methods, and by comparison with known analogues. These oleanane-type triterpene saponins glycosidated at C-29 were not obtained frequently.