The document is a preface to the III International Scientific and Practical Symposium "Materials Science and Technology" (MST-III-2023). The symposium, which took place in Khujand, Tajikistan, focused on the issues of materials science, technology, and physics. The main directions of the symposium included materials science and chemistry, physics, building materials, nanomaterials and nanotechnology, and production and technological development. The symposium aimed to summarize international experience in these fields. The document also lists the members of the International Program Committee, who were experts from various universities and institutions around the world. [Extracted from the article]