The purpose of the present invention is to provide: a steviol glycosyltransferase; and a method for producing a steviol glycoside using the enzyme. The present invention provides: a steviol glycosyltransferase; and a method for producing a steviol glycoside using the enzyme. The present invention also provides: a transformant having, introduced therein, a steviol glycosyltransferase gene; and a method for producing the transformant.