Bengali Hindus are an ethnoreligious population who make up the majority in the Indian states of West Bengal, Tripura, Andaman and Nicobar Islands, Jharkhand, and Assam's Barak Valley region. In Bangladesh, they form the largest minority. They are adherents of Hinduism and are native to the Bengal region in the eastern part of the Indian subcontinent. Comprising about one-third of the global Bengali population, they are the second-largest ethnic group among Hindus after Hindustani Hindus. Bengali Hindus speak Bengali, which belongs to the Indo-Aryan language family and adhere to Shaktism or Vaishnavism of their native religion Hinduism with some regional deities. There are significant numbers of Bengali-speaking Hindus in different Indian states. According to the census in 1881, 12.81 per cent of Bengali Hindus belonged to the three upper castes while the rest belonged to the Shudra and Dalit castes.

West Bengal is a state in the eastern portion of India. It is situated along the Bay of Bengal, along with a population of over 91 million inhabitants within an area of 88,752 km2 (34,267 sq mi) as of 2011. The population estimate as of 2023 is 102,552,787. West Bengal is the fourth-most populous and thirteenth-largest state by area in India, as well as the eighth-most populous country subdivision of the world. As a part of the Bengal region of the Indian subcontinent, it borders Bangladesh in the east, and Nepal and Bhutan in the north. It also borders the Indian states of Jharkhand, Odisha, Bihar, Sikkim and Assam. The state capital is Kolkata, the third-largest metropolis, and seventh largest city by population in India. West Bengal includes the Darjeeling Himalayan hill region, the Ganges delta, the Rarh region, the coastal Sundarbans and the Bay of Bengal. The state's main ethnic group are the Bengalis, with the Bengali Hindus forming the demographic majority.