Shiva (IAST: Śiva, also spelled Siva; Hindi, Shiv) is one of the principal deities of Hinduism. Within Shaivism he is viewed as the supreme deity, whereas in other branches of Hinduism such as the Smarta tradition he is worshipped as one of several manifestations of the divine. Followers of Hinduism who focus their worship upon Shiva are called Shaivites or Shaivas (Sanskrit Śaiva). His role as the primary deity of Shaivism is reflected in his epithets Mahādeva ("Great God"; mahā = great + deva = God), Maheśvara ("Great Lord"; mahā = great + īśvara = lord), and Parameśvara ("Supreme Lord"). Shaivism, along with Vaiṣṇava traditions that focus on Vishnu, and Śākta traditions that focus on the Goddess (Devī) are three of the most influential denominations in Hinduism.
Shiva is one of the five primary forms of the Divine in Smartism, a denomination of Hinduism that puts particular emphasis on five deities, the other four being Vishnu, Devi, Ganesha, and Surya. Another way of thinking about the divinities in Hinduism identifies Brahma, Vishnu, and Shiva as each representing one of the three primary aspects of the Divine in Hinduism, known collectively as the Trimurti. In the Trimurti system, Brahma is the creator, Vishnu is the maintainer or preserver, and Shiva is the destroyer or transformer.