One of the most distinguished figures of Persian literature, Niẓāmī Ganjavī (d. 606/1209?) not only demonstrated outstanding literary mastery in his magnum opus, the Khamsa, but also addressed the fundamental metaphysical and ethical issues of Islamic thought in poetic form. Niẓāmī articulated his views on being and on the relationship between God, the cosmos, and the human in the sections on tawḥīd and munājāt placed at the beginning of his masnavis. This study aims to examine Niẓāmī’s understanding of tawḥīd from a Sufi perspective. To this end, the tawḥīd sections of the masnavis are subjected to close reading on the basis of the original Persian texts, and an analysis is conducted of how the poet structures tawḥīd through Sufi concepts. The article focuses primarily on Makhzan al-Asrār, the masnavi in which Niẓāmī addresses the concept of tawḥīd most comprehensively, while also drawing on examples from his other masnavis. In order to evaluate the Sufi terminology used in the text within its proper historical and conceptual context, the study comparatively examines the works of Şemʿī Efendi (d. 1011/1602-3?), a representative of the Ottoman commentary tradition, as well as those of contemporary scholars of Niẓāmī—such as Vāḥid-i Destgirdī, Behrūz Sarvatiyān, Barat Zanjānī, and Sirājaddin Hāji—who prepared critical editions of Niẓāmī’s works and incorporated Sufi interpretations in their commentaries. The findings indicate that Niẓāmī approaches tawḥīd not merely as a theological doctrine but as a multilayered Sufi mode of understanding. Niẓāmī’s conception of tawḥīd is evaluated comparatively within the framework of waḥdat al-wujūd and in relation to the views of Sufi figures such as Abū Saʿīd Abū’l-Khayr (d. 440/1049), Junayd al-Baghdādī (d. 297/909), and Imām al-Ghazālī (d. 505/1111), who were influential in the Azerbaijānī cultural milieu of his time. In this respect, the study seeks to situate Niẓāmī Ganjavī’s understanding of tawḥīd within the tradition of Sufi thought and to render the irfānī dimension of his works more visible through a text-centered approach.