Ishtadevata may refer to:

• Iṣṭa-devatā (Hinduism), in Hinduism, an Ishta-deva or Ishta devata or Ishta-devatha is a term meaning "the God to which one prays most"
• Iṣṭha-deva(tā) (Buddhism), in Vajrayana Buddhism, a Yidam (Tibetan) or Ishtadevata (Sanskrit) is a fully enlightened being who is the focus of personal meditation, during a retreat or for life

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