The issue of effectively utilizing fly ash is a global environmental problem that requires urgent atten-tion and immediate action to resolve. Studies show that enormous volumes of fly ash are generated annually, yet only 25% of this waste is recycled. To address this alarming situation, efforts must focus on increasing its use across various industrial sectors. Promising applications of fly ash in construction, electronics, resource recovery, wastewater treatment, agriculture, and other industries require further research. Of particular interest is the use of fly ash in industrial processes. The physical, chemical, and mineralogical properties of fly ash—such as its morphology, specific surface area, porosity, and che-mical composition—make it an ideal material for various technological processes. Expanding the use of fly ash in various industrial sectors and its application in processes will significantly increase its utilization rate and reduce its negative impact on the environment.