The purpose of the article is an objective classification of the mountain passes of the Northern Tien Shan, collecting maximum information about them, which will ensure maximum safety for participants of mountain hiking trips. Systematic work on the classification of mountain passes of the USSR began immediately after the formation of tourism as a sport. By 1990, more than 4 thousand passes were classified. After the collapse of the USSR, tourists began to intensively make sports trips to the mountainous regions of far abroad. By 2001 (the year of the release of the new “ List...”), 5 thousand passes had already been classified. In 2020–2021. a new stage of updating the “List of high mountain passes....” has begun. Since Soviet times, the author has been responsible for the implementation of this work on the passes of the Northern Tien Shan and the Dzungarian Alatau. Therefore, it was in these mountainousareas that intensive work was carried out by the Research Institute of Tourism of the University “Turan” (Almaty, Kazakhstan), which the author has been leading for more than 10 years. In addition to supplementing the list with new passes passed by tourists over 20 years (from 2001 to 2021), the task was set to include in the text as much information as possible about the exact coordinates of the pass points, the names of the pioneers and the dates of the first passage. In addition, a large amount of work was carried out to clarify exactly this section of information about the passes. This article is devoted to the consideration of these issues. During this period, the author, together with colleagues, supplemented the list with 64 segments of new information and six segments of clarifications. Special attention is paid to the choice of reliable sources of information about coordinates and pioneers.