The object of the present invention is to provide Humulus lupulus-derived monoterpene glycosyltransferase and a method for producing a monoterpene glycoside by means of this enzyme.The present invention provides Humulus lupulus-derived monoterpene glycosyltransferase and a method for producing a monoterpene glycoside by means of this enzyme. The present invention provides a transformant transformed with a gene for Humulus lupulus-derived monoterpene glycosyltransferase and a method for producing such a transformant.