In enzymology, an alkylamidase () is an enzyme that catalyzes the chemical reaction
Thus, the two substrates of this enzyme are N-methylhexanamide and H<sub>2</sub>O, whereas its two products are hexanoate and methylamine.
This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. The systematic name of this enzyme class is N-methylhexanamide amidohydrolase.