Hinduism is a family of religious traditions that developed in South Asia over more than three millennia. It encompasses varied systems of worship, philosophy, social obligation, and spiritual discipline rather than a single creed. It has no single founder or universally governing institution. Although many Hindus recognize the authority of the Vedas and share ideas about karma and rebirth, beliefs and practices differ considerably across regions, communities, and teaching lineages. (rpl.hds.harvard.edu)
Historical development and terminology
The word Hindu derives from names associated with the Indus, or Sindhu, River. Initially used by outsiders as a geographical designation, it gradually acquired religious meanings. Hinduism became established as an umbrella term in modern usage. Some adherents prefer Sanatana Dharma, commonly translated as “eternal dharma,” although this expression does not eliminate the tradition’s internal diversity. (pluralism.org)
Hindu traditions emerged through interactions among Vedic religious culture and numerous regional and local traditions. Their earliest surviving textual foundations are the Vedas. Subsequent developments included philosophical inquiry in the Upanishads, epic narratives, devotional movements, and increasingly elaborate temple worship. Precise origins are difficult to establish; proposed continuities with the Indus civilization remain uncertain rather than demonstrating an identifiable founding event. (rpl.hds.harvard.edu)
Devotional traditions developed through both Sanskrit and regional languages. Poet-saints in southern India praised Shiva and Vishnu, while later compositions celebrated Rama, Krishna, and the Goddess elsewhere. From the nineteenth century, migration and religious teachers carried Hindu traditions to new international settings, where communities established institutions and reformulated inherited practices. (pluralism.org)
Scriptures and religious authority
The Vedas, composed in Sanskrit and preserved through oral transmission, comprise four principal collections: the Rigveda, Samaveda, Yajurveda, and Atharvaveda. They contain hymns, chants, ritual formulas, and other religious material. Associated texts include the Brahmanas, concerned especially with ritual, and the Upanishads, which investigate the self, the universe, and ultimate reality. Vedic revelation is traditionally classified as shruti, meaning “that which is heard.” (pluralism.org)
Religious authority also extends to the Mahabharata and Ramayana, epic narratives whose characters and ethical dilemmas shape worship and cultural life. The Bhagavad Gita, embedded in the Mahabharata, presents Krishna’s teachings to Arjuna. Regional devotional works can possess comparable importance for particular communities: the Tamil hymns collected in the Divya Prabandham, for example, are revered as a “Tamil Veda.” Consequently, recognized scriptural authority does not imply that all Hindus study the same texts. (pluralism.org)
Duty, action, and liberation
Several concepts recur widely, although their interpretations vary. Dharma concerns the order that sustains life, including ethical conduct, religious obligations, and duties associated with social circumstances. Karma, literally “action,” describes actions and their consequences, especially their significance for a person’s spiritual condition. Many traditions understand repeated birth and death through samsara and identify release from this cycle as moksha, or liberation. (pluralism.org)
The Upanishads and later philosophical traditions examine atman, the self, and Brahman, ultimate reality. Vedanta includes differing accounts of their relationship. Shankara’s nondual interpretation emphasizes their fundamental identity, while devotional interpretations preserve distinctions that make a relationship of love between worshipper and deity possible. Knowledge, devotion, disciplined practice, and action thus receive different emphases across traditions. A guru, or spiritual teacher, often transmits teachings and initiates students within a lineage. (pluralism.org)
Deities and devotional traditions
Hindu understandings of divinity cannot be reduced to a single theological category. Some worshippers emphasize one supreme deity, others honor multiple divine forms, and philosophical teachings may describe ultimate reality without personal attributes. These approaches can coexist in the same community or temple. (pluralism.org)
Major traditions include Vaishnavism, centered on Vishnu and associated forms such as Krishna and Rama; Shaivism, centered on Shiva; and Shaktism, centered on the Goddess and divine power. These labels encompass numerous communities rather than centrally administered denominations. Bhakti, loving devotion, finds expression through hymns, offerings, dance, dramatic performance, and the repetition of divine names. (rpl.hds.harvard.edu)
Worship and social life
Worship takes place in temples and at household shrines. A common practice is puja, in which a deity is honored through hospitality-like offerings of flowers, food, water, incense, and light. Sacred images, or murtis, serve as focal points of divine presence and worship. Darshan means seeing, and being seen by, the deity; offerings returned to worshippers as prasad convey divine blessing. Temples also support festivals and pilgrimage. (pluralism.org)
Hindu social history includes caste distinctions. Varna, an idealized classification into broad social categories, differs from jati, the numerous birth-based communities that historically regulated occupations, marriage, and social interaction. These arrangements have also been challenged by religious teachers and reformers; they should not be treated as a uniform expression of every Hindu’s beliefs or practices. (pluralism.org)
Geographic distribution
Pew Research Center’s estimates for 2020, published in 2025, counted nearly 1.2 billion Hindus, approximately 14.9% of the global population. About 95% lived in India. Hindus constituted the largest religious group in India, Nepal, and Mauritius. Communities also exist across Southeast Asia, Africa, the Caribbean, Europe, North America, and Oceania. Diaspora temples and associations frequently bring together people from different regional and linguistic backgrounds, making religious education and the transmission of traditions to younger generations important institutional activities. (pewresearch.org)