Dextranase (, dextran hydrolase, endodextranase, dextranase DL 2, DL 2, endo-dextranase, ñ-<small>D</small>-1,6-glucan-6-glucanohydrolase, 1,6-ñ-<small>D</small>-glucan 6-glucanohydrolase) is an enzyme with systematic name 6-ñ-<small>D</small>-glucan 6-glucanohydrolase. It catalyses the following chemical reaction