T This study discusses the principles of Islamic ornamentation in beauty and its application in the architecture of educational buildings. This aims to obtain the principles of Islamic ornamentation for the application of beauty in educational buildings with Islamic architecture that can support the concept of education and maximize the learning process in terms of Islamic religious knowledge so as to create the impression of Islam in educational buildings. This study uses the Literature Review method by reviewing several journals from various scientific literature database database websites. The principle of Islamic ornamentation that can be applied to support educational buildings in the process of learning religious knowledge in order to create educated students according to Islamic teachings and sharia, namely calligraphy ornamentation originating from the Al-Quran and Hadith that can be read and easily remembered by students in the learning process , Geometric ornamentation in the form of an octagonal (octagonal star shape) with a combination of calligraphy ornaments, Floral ornamentation (Arabesque) with plant motifs. Therefore, it is concluded that the principles of Islamic architectural ornamentation for educational buildings are related to Islamic values originating from the Qur'an and Hadith