Yoga is known to be one of the ‘Darśanaśātra’ or ‘School of Indian philosophy’ having known for its several
benefits. It is also considered to be an ‘Ancient Indian Psychology’. Everyone knows that Yoga has come from root
‘Yuj’ means to join. But in this paper author has discussed about three different perspectives about etymological
meaning of ‘Yuj’ and ‘Yoga’. It will be necessary for a student of yoga, to understand about various definition of
Yoga in its different perspectives. Author gives different definitions of yoga and has mentioned about various
types and forms of yoga those are present till date. It explains about the understanding of yoga , not only restricted
to ‘Sāmkhya Yoga’ – ‘Pātañjala – Astānga Yoga’ or ‘Hathayoga’ but also about Yoga traditions in Buddhism and
Jainism as well. Author emphasizes the importance of knowing about the authentic forms of yoga and caution
about distorted forms of yoga prevalent in the global scenarios. There is a discussion about authentic training
institution of yoga , one need to know in India.Keyords: Yoga; Etymology; Types; Traditions, Authentic and inauthentic & distorted forms of Yoga; Yoga
institutions in India