The enzyme galactolipase (EC 3.1.1.26) catalyzes the reaction

1,2-diacyl-3-β-D-galactosyl-sn-glycerol + 2 H₂O 3-β-D-galactosyl-sn-glycerol + 2 carboxylates

This enzyme belongs to the family of hydrolases, specifically those acting on carboxylic ester bonds. The systematic name of this enzyme class is 1,2-diacyl-3-β-D-galactosyl-sn-glycerol acylhydrolase. Other names in common use include galactolipid lipase, polygalactolipase, and galactolipid acylhydrolase. This enzyme participates in glycerolipid metabolism.

• Helmsing PJ (1969). "Purification and properties of galactolipase". Biochim. Biophys. Acta. 178 (3): 519–33. doi:10.1016/0005-2744(69)90221-6. PMID 5784904.
• Hirayama O, Matsuda H, Takeda H, Maenaka K, Takatsuka H (1975). "Purification and properties of a lipid acyl-hydrolase from potato tubers". Biochim. Biophys. Acta. 384 (1): 127–37. doi:10.1016/0005-2744(75)90102-3. PMID 236765.