ENThe article "Leon Mamonich's Editions from the Collections of the National Library of Belarus" is devoted to the publishing activity of Leon Mamonich. The editions of 1601-1624s from the collection of the National Library of Belarus, printed during the last period of existence of the Mamonich's printing house, are described. Particular attention is paid to the characteristics of the two copies of the Statute of the Grand Duchy of Lithuania (1588) in Polish language with the same date of edition (1616).