In the 5th and 6th centuries A.H., glassmaking in the Islamic era reached its peak of growth and prosperity in Islamic lands and was accompanied by innovations in the field of construction and decoration, which became the inspiration for glassmaking in the world after this period. This article aims to introduce and categorize innovations in the methods of producing and decorating glass products from the fifth and sixth centuries of Hijra. This research is descriptive-analytical with a library method. The results show in the 5th and 6th centuries of Hijri, Islamic glassmaking underwent significant transformation and innovation, evident in four key areas: color and raw materials, form and manufacturing methods, decorations, and applications. Islamic glassmaking in Iran, Iraq, Syria, and Egypt exhibited distinct technical features compared to the preceding era, which in Iran ceased with the Mongol invasion in the 7th century AH, subsequently shifting to the glassmaking centers of Iraq, Syria, and Egypt. Manuscript profile