Saiva or Shaiva may refer to:
Saiva is a genus of Asian lanternbugs, family Fulgoridae. Saiva kurukkals redirects to Vellalar, which were the nobility, aristocracy of the ancient Tamil order. Shaiva Siddhanta or Saiva-Siddhanta, provides the normative rites, cosmology and theological categories of tantric Saivism. Shaivism or Saivism is one of the four most widely followed sects of Hinduism. Saiva Neri [The saiva way] , part of the Tirumurai, a twelve-volume collection of Tamil Śaiva devotional poetry. Urumpirai Saiva Tamil Vidyalayam is a provincial school in Urumpirai, Sri Lanka. The Saiva Agamas are a subset of the Agamas. The Saiva revivalism promoted by Arumugam Pillai. The Saiva Siddhanta Church is a spiritual institution and identifies itself with the Śaivite Hindu religion. The South India Saiva Siddhanta Works Publishing Society Ltd. (also known as Kazhagam) is a Tamil book publishing company.