LTStraipsnyje tiriami Vilniuje saugomi rusėniški Lietuvos didžiųjų kunigaikščių Aleksandro Jogailaičio ir Žygimanto Senojo dokumentai, apimantys šių valdovų valdymo laikotarpį, 1492–1544 m. Atliekant empirinį tyrimą suregistruoti 142 tokie dokumentai. Pagrindiniai duomenys apie juos pateikiami straipsnio priede. Pagrindinėje straipsnio dalyje bandoma identifikuoti už dokumentų parengimą atsakingus raštininkus; nustatyti dokumentus, kuriuos surašė juos pasirašę raštininkai; aptariamos bendros dokumentų paleografinės ypatybės. Raktiniai žodžiai: Aleksandras Jogailaitis, Žygimantas Senasis, rusėniški dokumentai, Vilnius.
ENNumerous documents connected with the history of the Grand Duchy of Lithuania are kept in Vilnius. In this article, we research the Ruthenian documents of Alexander Jagiellon and Sigismund the Old, the grand dukes of Lithuania, that are kept in the archives and libraries of Vilnius. In the course of empirical research that was carried out at the Lithuanian State Historical Archives, the Manuscripts Department of the Wroblewski Library of the Lithuanian Academy of Sciences, the Rare Books and Manuscripts Unit of the Martynas Mažvydas National Library of Lithuania, and the Manuscripts Division of the Vilnius University Library we registered 142 such documents. The main data about them are represented in the annex. Meanwhile, in the main part of the article we research the documents that were signed by the scribes of Sigismund the Old, the documents signed by other persons or not signed at all, and common palaeographic features of all 142 documents. We did not find any signatures in the documents of Alexander Jagiellon; meanwhile, among the documents of Sigismund the Old, we identified signatures of ten persons, one of whom was Sigismund the Old himself. Analysis of the documents signed by this ruler’s scribes allows concluding that they wrote only a part of these documents. The remaining documents signed by the ruler’s scribes were written by other persons. Unfortunately, we managed to find little information about these persons. In the case of the documents signed by other persons or not signed at all, we managed to identify the scribes who could have been responsible for the preparation of these documents.In the case of the documents of Grand Duke of Lithuania Alexander Jagiellon, we managed to identify the documents that could have been written by the same person. Palaeographic analysis of the documents examined allows the conclusions that these documents contain common features of two types of Ruthenian writing: cursive and semi-uncial. The view about cursive becoming established in the Ruthenian documents of Grand Duke of Lithuania Alexander Jagiellon, stated in historiography, is questionable. The latter view about the conditionality of the term ‘cursive’ and the manifestation of some traits of semi-uncial in the Ruthenian documents of the chancellery of the Grand Duke of Lithuania in the sixteenth century, which is also proposed in historiography, looks much more reasoned. Keywords: Alexander Jagiellon, Sigismund the Old, Ruthenian documents, Vilnius.