The Nimbarka Sampradaya (IAST: Nimbārka Sampradāya, Sanskrit निम्बार्क सम्प्रदाय), also known as the Kumāra Sampradāya, Hamsa Sampradāya, and Sanakādi Sampradāya (सनकादि सम्प्रदाय), is one of the four Sampradāyas. It was founded by Nimbarka, a Telugu Brahmin yogi and philosopher. It propounds the Vaishnava Bhedabheda theology of Dvaitadvaita (dvaita-advaita) or dualistic non-dualism. Dvaitadvaita states that humans are both different and non-different from Isvara, God or Supreme Being. Specifically, this Sampradaya is a part of Krishnaism—Krishna-centric traditions.
Nimbarka Sampradaya is also known as Kumāra Sampradāya, Hamsa Sampradāya, and Sanakādi Sampradāya. According to tradition, the Nimbarka Sampradaya Dvaita-advaita philosophy was revealed by to Sri Sanakadi Bhagawan, one of the Four Kumaras; who passed it to Sri Narada Muni; and then on to Nimbarka. The Four Kumaras, Sanaka, Sanandana, Sanātana, and Sanat Kumāra, are traditionally regarded as the four mind-born sons of Lord Brahmā. They were created by Brahmā in order to advance creation, but chose to undertake lifelong vows of celibacy (brahmacarya), becoming renowned yogis, who requested from Brahma the boon of remaining perpetually five years old. Śrī Sanat Kumāra Samhitā, a treatise on the worship of , is attributed to the brothers, just like the Śrī Sanat Kumāra Tantra, which is part of the Pancarātra literature.
In the creation of this universe as narrated by the literature, Śrī Nārada Muni is the younger brother of the Four Kumāras, who took initiation from his older brothers. Their discussions as guru and disciple are recorded in the with a famous conversation in the , and in the Śrī Nārada and the Pañcarātra literature.
Nārada Muni is recorded as main teacher in all four of the Sampradāyas. According to tradition, he initiated Śrī Nimbārkācārya into the sacred 18-syllabled Śrī Gopāla Mantra (Klim Krishnaya Govindaya Gopijanavallabhaya Svaha), and introduced him to the philosophy of the Yugala upāsana, the devotional worship of the divine couple .