Neotantra
Neotantra, navatantra (Sanskrit: नव, nava 'new'), or tantric sexuality, is a Western new religious movement influenced by the Eastern esoteric spiritual traditions of Tantra. Rooted in elements of Hindu and Buddhist tantras, neotantra blends New Age interpretations with modern Western perspectives, often emphasizing the sexual aspects of these ancient traditions. While some proponents reference traditional texts and principles, many utilize tantra as a broader term encompassing sacred sexuality, occasionally incorporating unconventional practices. However, neotantra does not always adhere to the complete range of Indian tantric practices, particularly the reliance on a guru. The perception of Tantra in the West has evolved, deviating from its original traditions. Initially seen as a "cult of ecstasy", it has come to be associated with "spiritual sex" or "sacred sexuality", wherein sexual experiences are considered sacred acts capable of elevating participants spiritually. This shift in understanding has grown alongside the increased interest in Tantra in Western culture, often emphasizing its sexual components. Key figures such as Sir John George Woodroffe, Pierre Bernard, and Bhagwan Shree Rajneesh have played pivotal roles in popularizing these ideas. Criticisms and debates exist, with some scholars highlighting the potential for misinterpretation and the blending of Tantric principles with Western attitudes towards pleasure and spirituality. Despite these debates, neotantra continues to evolve, creatively integrating aspects of Buddhism, Hinduism, and Western culture. History

Practitioners
Sir John George Woodroffe, also known by his pseudonym Arthur Avalon, was a British Orientalist whose work helped to unleash in the West a deep and wide interest in Hindu philosophy and Yogic practices. Alongside his judicial duties he studied Sanskrit and Hindu philosophy and was especially interested in Hindu Tantra. He translated some twenty original Sanskrit texts and published and lectured prolifically on Indian philosophy and a wide range of Yoga and Solo Tantra topics. Woodroffe's The Serpent Power – The Secrets of Tantric and Shaktic Yoga, is a source for many modern Western adaptations of Kundalini yoga practice. It is a philosophically sophisticated commentary on, and translation of, the Satcakra-nirupana ("Description of and Investigation into the Six Bodily Centres") of Purnananda (dated around AD 1550) and the Paduka-Pancaka ("Five-fold Footstool of the Guru"). The term "Serpent Power" refers to the kundalini, an energy said to be released within an individual by meditation techniques. Pierre Bernard was a pioneering American yogi, scholar, occultist, philosopher, mystic, and businessman. He claimed to have traveled to Kashmir and Bengal before founding the Tantrik Order of America in 1905. He eventually expanded to a chain of tantric clinics in places such as Cleveland, Philadelphia, Chicago, and New York City. Bernard is widely credited with being the first American to introduce the philosophy and practices of yoga and tantra to the American people. Many teachers of this version of tantra believe that sex and sexual experiences are sacred acts, which are capable of elevating their  participants to a higher spiritual plane. They often talk about raising Kundalini energy, worshiping the divine feminine and the divine masculine, activating the chakras. Guru Bhagwan Shree Rajneesh, later known as Osho, used his version of tantra in combination with breathing techniques, bio-energy, yoga, and massage in some of the groups at his ashram. He is the author of many books on meditation, taoism, buddhism, and mysticism, and at least six on tantra. One of them is Tantra, The Supreme Understanding, in which he unpacks the verses of the "Song of Mahamudra", by Tilopa. In addition out of his discourses on the Vigyan Bhiarav (or Vijnaya-bhairava), the 112 practices for enlightenment resulted in the much longer The Book of Secrets. Criticisms
Georg Feuerstein, a German Indologist who also trained in tantra, writes in the epilogue of his book Tantra: Path of Ecstasy:

Responding to criticism of modern Western Tantra, Geoffrey Samuel, a historian of Indian and Tibetan Tantra writes:

According to author and critic of religion and politics Hugh Urban:

Urban says he does not consider this wrong or false, but "simply a different interpretation for a specific historical situation." 