Swami Vivekananda:
12 January 1863 – 4 July 1902 , Was an Indian Hindu monk, a chief disciple of the 19th-century Indian mystic Ramakrishna. He was a key figure in the introduction of the Indian philosophies of Vedanta and Yoga to the Western world  and is credited with raising interfaith awareness, bringing Hinduism to the status of a major world religion during the late 19th century.

Sri Sri Ravi Shankar:
Ravi Shankar, commonly known as Sri Sri Ravi Shankar, was born on 13 May 1956 in Tamil Nadu, India. He is also frequently referred to simply as “Sri Sri” (honorific) or as Guruji or Gurudev.  He is a spiritual leader and founder of the Art of Living Foundation created in 1981, which aims to relieve individual stress, societal problems, and violence. In 1997, he established a Geneva-based charity, the International Association for Human Values, an NGO that engages in relief work and rural development and aims to foster shared global values.

Baba Ramdev:
Baba Ramdev  pronunciation (help·info) (born as Ramkrishna Yadav in Haryana)] is a yoga teacher known for his work in Ayurveda, business,politics and agriculture. He is best known for popularising yoga among Indians through his mass yoga camps. He founded the Patanjali Group of Institutions. Ramdev has more recently become interested in Indian political issues.

Sri Ramakrishna Paramhansa:
18 February 1836 – 16 August 1886, bornGadadhar Chatterji or Gadadhar Chattopadhyay, was an Indian mystic and yogi during the 19th-century. Ramakrishna was given to spiritual ecstacies from a young age, and was influenced by several religious traditions, including devotion toward the goddess Kali, Tantra and Vaishnava bhakti and Advaita Vedanta.

Sathya Sai Baba:
23 November 1926 – 24 April 2011 was an Indian guru and philanthropist. He claimed to be thereincarnation of Sai Baba of Shirdi. Sai Baba’s materialisations of vibhuti (holy ash) and other small objects such as rings, necklaces, and watches, along with reports of miraculous healings, resurrections,  clairvoyance,  bilocation and alleged omnipotence andomniscience, were a source of both fame and controversy.

Sant Shree Morari Bapuji:
Morari Bapu was born on 25 September 1946 in Talgajarda near Mahuva, Gujarat. He is a popular Hindu kathakaar (bard), who has been giving 9 day-long sermons (kathaas) in both Gujarati  and Hindi all over the world—including in India, the United States, the United Kingdom, South Africa,Kenya, Uganda, on a cruise ship in the Mediterranean Sea, and on an airplane travelling the world, in the Vatican City and in the foothills of Mount Kailas in Tibet/China—since his first katha in 1960.

Pramukh Swami (Swaminarayan):
7 December 1921 – 13 August 2016  was the guru and Pramukh, or president, of the BAPS Swaminarayan Sanstha, an international Hindu socio-spiritual organization. BAPS regards him as the fifth spiritual successor of Swaminarayan, following Gunatitanand Swami, Bhagatji Maharaj,Shastriji Maharaj, and Yogiji Maharaj. He was believed by his followers to be in constant communion with Swaminarayan, and ontologically, the manifestation of Akshar, the eternal abode of Swaminarayan.

Adi Shankara:
Adi Shankara was an 8th century Indian Hindu philosopher and theologian whose teachings had a profound influence on the growth of Hinduism. Also known as Shri Adi Shankaracharya and Bhagavatpada Acharya (the guru at the feet of Lord), he was a religious reformist who critiqued the rituals-oriented schools of Hinduism and cleansed the Vedic religious practices of ritualistic excesses.

Jaggi Vasudev :
Jaggi Vasudev is an Indian yogi and mystic who founded the Isha Foundation, a non-profit organization which offers yoga programs around the world. A multi-faceted personality, he is also an author, motivational speaker, and philanthropist along with being a spiritual master.

Mahavira:
Mahavira (Mahāvīra), also known as Vardhamāna, was the twenty-fourth and last Jain Tirthankara (Teaching God). Mahavira was born into a royal family in what is now Bihar, India, in 599 BC. At the age of 30, he left his home in pursuit of spiritual awakening, and abandoned worldly things, including his clothes, and became a monk. For the next twelve-and-a-half years, Mahavira practiced intense meditation and severe penance, after which he becamekevalī (omniscient).