Galactan endo-1,6-beta-galactosidase (, endo-1,6-beta-galactanase) is an enzyme with systematic name endo-beta-(1->6)-galactanase. This enzyme catalyses the following chemical reaction
The enzyme specifically hydrolyses 1,6-beta-D-galactooligosaccharides with a degree of polymerization (DP) higher than 3.