What is Maha samadhi?

A jivan mukti who's body dies. A jivan mukti is a fully Self-realized person who is fully liberated while still embodied. Jivan-mukti is also known as sahaja samadhi.

Sahaja samadhi: The effortless ecstasy. This is the state of the Jnani who has finally and irrevocably eliminated his ego. A Jnani in this state is able to function naturally in the world, just as any ordinary person does. Knowing that he is the Self, the Jnani sees no difference between himself and others or the world. For a Jnani, everything is a manifestation of the indivisible Self.

Ramakrishna

Arik Dorje Chang Rinpoche

Amma Anasuya Devi

Mahakavi Jainacharya Gyansagar

YogiRam

Sai Baba

Valia Amma

Shri Gopal Baba Maharaj Pithapuram, Andhra Pradesh
It is said that he entered samadhi in 2006 at the age of 170 years, a true breatharian.

Sri Pichhammatalli

Sri Pichhammatalli later in life

Sarada Devi

Swami Bhaskarananda Saraswati
(Varanasi)

Sri Satguru Jagjit Singh

Khandro Tsering Chodron

Chandrasekharendra Saraswati Swamigal

Dhan Nirankar ji

Vethathiri-Maharishi

Meher Baba

Dhan Sri Satguru Uday Singhji

Nisargadatta

Ramesh Balsekar

Swami Rudrananda (Rudi)

Kripalu Jagadguru

Kattu Shiva Brahmasri Ramanna

Siddhar Maharaj

Shri Yukteswar

Baba Sawan Singh

Tamil saint (Name unknown)
Caretaker of the jeeva samadhi of Isaniya Gnana Desikar in Tiruvannamalai

Inayat

Baba Mani

Muktananda

Chivatam Amma

Sri Tinnai swami

Kumbokonam mouna nirvana swamigal madalayam

Huzur Saligram

Gondavalekar maharaj

Krishnananda Saraswatiji

Sarguru Gnanadesikar swamigal

Sri Sidha Yogiswar

Sri Ramavadhuta

Swami Sivananda Paramahamsar

Thavathiru Santhalinga Ramaswamy Adigalar

Sakarai Palani Siddha // Palani, Tamil Nadu
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Chagdud Tulku rinpoche

Trichen Rinpoche

Yogi Ramaiah

Swami Lakshmanjoo

Mahasiva siddhar

Tridandi Swami Srimad Bhakti Promode Puri Maharaj

Neem Karoli Baba

Sri Sacchidananda Shivabhinava Nrisimha Bharati Mahaswamigal

Sri Omkarnath

Sant Mat Radhasoami

Kottang kuchi sithar

Bruno Gröning

Swami Shantananda Puri Maharaj

Shivabala yogi

Hariharananda

Swami Nikhileshwaranand ji

Vallimalai Satchidananda Swamigal