The enzyme 1,6-ñ-<small>L</small>-fucosidase () catalyses the following chemical reaction
It belongs to the family of hydrolases, specifically those glycosidases that hydrolyse O- and S-glycosyl compounds. The systematic name is 1,6-<small>L</small>-fucosyl-N-acetyl-<small>D</small>-glucosaminylglycopeptide fucohydrolase. It is also called ñ-<small>L</small>-fucosidase.