The article considers the results of years-long study in the coinage of the Nizhny Novgorod-Suzdal Principality of the late 14th – early 15th century AD (prior to the monetary reform of the early 1410s). About 17,500 coins were involved in the study, systematized and divided into four groups. The first group includes sovereign coinage from the period of independence of the Nizhny Novgorod-Suzdal Principality (5107 items), the second one includes monetary issues of Moscow governors after the annexation of Nizhny Novgorod to Moscow for the period of 1392–1410 (3074 coins), and the third one comprises anepigraphic coins of the late 14th – early 15th century AD, largely unidentified by issuer and place of their coinage (5427 coins). Bilateral imitations of Jochid dirhams (more than 3800 coins; some of which are associated with coins of the main groups due to common stamps) are not considered in the paper.