A yogi is a practitioner of Yoga, including a sannyasin or practitioner of meditation in Indian religions. The feminine form, sometimes used in English, is yogini.
Yogi has since the 12th century CE also denoted members of the Nath siddha tradition of Hinduism, and in Hinduism, Buddhism and Jainism, a practitioner of tantra. In Hindu mythology, the god Shiva and the goddess Parvati are depicted as an emblematic yogi–yogini pair.
A yogini (Sanskrit: योगिनी, IAST: yoginī) is a female master practitioner of tantra and yoga, as well as a formal term of respect for female Hindu or Buddhist spiritual teachers in the Indian subcontinent, Southeast Asia and Greater Tibet. The term is the feminine Sanskrit word of the masculine yogi, while the term "yogin" IPA: [ˈjoːɡɪn] is used in neutral, masculine or feminine sense.
A yogini, in some contexts, is the sacred feminine force made incarnate, as an aspect of Mahadevi, and revered in the yogini temples of India. These often revere a group of 64 yoginis, and are named as such, but can also have 42 or 81 yoginis. The names of the 64 yoginis vary in different classifications.