Gaudiya Vaishnavism (IAST: Gauḍīya Vaiṣṇavism), also known as Bengali Vaishnavism, Chaitanya Vaishnavism (Caitanya Vaiṣṇavism) or the Gaudiya Vaishnava tradition, is a Vaishnava Hindu religious movement inspired by Chaitanya Mahaprabhu (1486–1534) in India. "Gaudiya" refers to the Gauḍa region of Bengal, with Vaishnavism meaning "the worship of Vishnu". Its theological basis is primarily that of the Bhagavad Gita and Bhagavata Purana (known within the tradition as the Srimad Bhagavatam), as interpreted by early followers of Chaitanya, such as Sanatana Goswami, Rupa Goswami, Jiva Goswami, Gopala Bhatta Goswami and others.The focus of Gaudiya Vaishnavism is the devotional worship (known as bhakti yoga) of Radha and Krishna, and their many divine incarnations as the supreme forms of God, Svayam Bhagavan. Most popularly, this worship takes the form of singing Radha and Krishna's holy names, such as "Hare", "Krishna" and "Rama", most commonly in the form of the Hare Krishna (mantra), also known as kirtan and dancing along with it. The movement is sometimes referred to as the Brahma-Madhva-Gaudiya sampradaya, referring to its belief in the succession of spiritual masters (gurus) believed to originate from Brahma.
Gaudiya Vaishnavism is the spiritual and philosophical foundation of the International Society for Krishna Consciousness, or "Hare Krishna movement".
It classifies itself as a monotheistic tradition, seeing the many forms of Vishnu or Krishna as expansions or incarnations of the one Supreme God, adipurusha Sri Krishna.