The Tirumantiram, believed to have been written in midfirst millennium CE, is regarded as the tenth of the twelve volumes of the Śaiva Tamil canon Paṇṇiru Tirumuṟai used in worship in Śiva temples all over Tamilnadu. The Tirumantiram is a collection of approximately 3100 verses in lucid Tamil written by Tirumūlar, regarded variously as a ŚaivaSiddhānta yogi, a nātha yogi, and a tāntric. Tirumūlar’s verses form the basis of the Tamil ŚaivaSiddhānta philosophy; they also deal with tantra and yoga. Unlike (...) other ŚaivaSiddhānta texts, the Tirumantiram elaborates on aṣṭāṅga yoga like in the yoga sūtras of Patañjali; it further goes on to describe several āsanas and prāṇāyāma in elaborate detail. Acknowledging that classical and modern scholarship on yoga have paid scant attention to the work of Tirumūlar, this essay provides an insight into Tirumūlar’s legacy. It compares the aṣṭāṇga yoga of Tirumūlar framed in the context of ŚaivaSiddhānta with the approach of Patañjali. It also shows the continuity of the Tirumūlar tradition in the framework of bhakti literature and in the context of the earlier Tamil approach to āsanas. It establishes that no narrative on yoga is complete without acknowledging the enduring contribution of Tirumūlar. (shrink)