Advaita Acharya (Bengali: অদ্বৈত আচার্য ) (1434–1559), born Kamalaksha Bhattacharya, was said to be an incarnation of Krishna or Chaitanya in the Gaudiya Vaishnava sampradaya, notable disciple and companion of the founder of the Gaudiya Vaishnava sect, Chaitanya Mahaprabhu, and guru of Haridasa Thakur.
 He was born at Navagrama-Laur village in the present-day Sylhet District of Bangladesh in 1434, some fifty years before Chaitanya, and spent most of his adult life in the town of Shantipur with his wife and family (Advaita Acharya had six sons, Acyutananda, Krsna Misra, Gopala dasa, Balarama, Svarupa, and Jagadisa) teaching the philosophy of Bhagavad Gita and Bhagavata Purana and promoting Bhakti Yoga.
Śivarāma Swami (born 30 March 1949, Budapest, Hungary) is a Vaishnava guru and a religious leader for the International Society for Krishna Consciousness (ISKCON).
 He is a member of the Governing Body Commission who is responsible for leading ISKCON's mission in Hungary, Romania and Turkey.
 Within ISKCON, Sivarama Swami is also well known for his deep knowledge of Vaishnava literature, and has written several books about Gaudiya Vaishnavism.
 He has been conducting courses at Bhaktivedanta Manor on his own commentaries to Venu Gita in Gaudiya Vaishnava Theology.
The Six Goswamis of Vrindavan were a group of devotional teachers (gurus) from the Gaudiya Vaishnava tradition of Vedic Religion who lived in India during the 15th and 16th centuries.
 They are closely associated with the land of Vrindavan where they spent much time in service of the Bengali saint Chaitanya Mahaprabhu, who is considered as Krishna's "yuga-avatar" by the Gaudiya Vaishnava lineage, who highly regard them for their extreme renunciation of physical comforts and pleasures in the practice of Bhakti Yoga, and for their philosophical presentations of the teachings of their guru, Chaitanya Mahaprabhu.
Gopala Bhatta Goswami (1503–1578) is one of the foremost disciples of the Vaishnava saint, Chaitanya Mahaprabhu, and a leading historical figure in the Gaudiya Vaishnava school of Hinduism.
 He was part of a group of Vaishnava devotees known collectively as the Six Goswamis of Vrindavan, who were influential in establishing the philosophical basis of the Gaudiya tradition in formalised writings.
Achintya-Bheda-Abheda (अचिन्त्यभेदाभेद, "acintyabhedābheda " in IAST) is a school of Vedanta representing the philosophy of "inconceivable one-ness and difference".
 In Sanskrit "achintya" means 'inconceivable', "bheda" translates as 'difference', and "abheda" translates as 'non-difference'.
 The Gaudiya Vaishnava religious tradition employs the term in relation to the relationship of creation and creator (Krishna, Svayam Bhagavan),<ref name = Kaviraja>
Srila Bhakti Ballabh Tirtha Maharaj (13 April 1924 - 20 April 2017) is a disciple of Bhakti Dayita Madhava Goswami Maharaj and an acharya and initiating spiritual master (Sri Guru) in the Gaudiya Math following the philosophy of the Bhakti marg, specifically of Caitanya Mahaprabhu and Gaudiya Vaishnava theology.
 He was the President Acharya of Sree Chaitanya Gaudiya Math, headquartered at Kolkata, West Bengal, India and having more than 22 branches in India.
 He was president of WVA (World Vaishnava Association) and founder of GOKUL( Global organization for KrishnaChaitnaya's Universal Love).
Govinda Bhashya is a Gaudiya Vaishnava commentary on Vedanta Sutra.
 It was written in the year 1628 Sakabda (1718 CE) at Galtaji (Galta) near the present city of Jaipur, Rajasthan, by Baladeva Vidyabhushana to defend Gaudiya Vaishnava Theology.
Krishna ( ; ] ; Sanskrit: कृष्ण, IAST: Kṛṣṇa) is a major deity of Hinduism.
 He is worshiped as the eighth avatar of the god Vishnu and also as the supreme God in his own right.
 He is the god of compassion, tenderness, and love in Hinduism, and is one of the most popular and widely revered among Indian divinities.
 Krishna's birthday is celebrated every year by Hindus on Janmashtami according to the lunisolar Hindu calendar, which falls in late August or early September of the Gregorian calendar.
Jagannātha Dāsa Bābājī (1776–1894) was an influential leader (guru) in the Gaudiya Vaishnava tradition of Hinduism, and is respected as a "Mahatma" or saint by followers of his lineage.
 He accepted initiation (diksha) from Jagadananda Goswami of Vrindavan, and later accepted Babaji initiation from Madhusudana dasa Babaji.
 For the rest of his life, his example as a Gaudiya Vaishnava devotee was an inspiration to many in the community.
 Bhaktivinoda Thakur is quoted calling him "the commanding chief of the devotees".
The International Society for Krishna Consciousness (ISKCON), known colloquially as the Hare Krishna movement or Hare Krishnas, is a Gaudiya Vaishnava Hindu religious organisation.
 ISKCON was founded in 1966 in New York City by A. C. Bhaktivedanta Swami Prabhupada who is worshipped by followers as Guru and spiritual master.
 Its core beliefs are based on select traditional scriptures, particularly the "Bhagavad-gītā" and the "Śrīmad Bhāgavatam".
 ISKCON is a direct descendant of Brahma-Madhva-Gaudiya Vaishnava Sampradaya.
 The appearance of the movement and its culture come from the Gaudiya Vaishnava tradition, which has had adherents in India since the late 15th century and American and European converts since the early 1900s in North America, and in England in the 1930s.

Question: Which religion features a god who is discussed in the Gaudiya Vaishnava?
Answer: Hinduism