Dr John Hurrell Crook, Phd, DSC (born 27 November 1930) is a British evolutionary psychologist and student of Chán (Chinese Zen) Buddhism. He is a dharma heir of the late Chan Master Sheng-yenof Dharma Drum Mountain, Taiwan, having received dharma transmission in 1993 in the lineages of Linji and Caodong Chan. He originally encountered Chan/Zen in Hong Kong whilst undergoing National Service in the British Army during the Korean War.
In 1977 Crook led an expedition to Zanskar in the Ladakh Himalayas, a pilot study focussing on polyandrous marriage. For several years, he and colleagues led further expeditions studying the geology, agriculture, social and family life and monastic practices in this remote, high-altitude region. He later returned with James Low, a Tibetologist fluent in the texts and language, to study the lives of Buddhist hermits in the mountains.
Retiring early, he began practicing Zen Buddhism in Intensive retreats taught in New York by Chan Master Sheng Yen who in 1993 transmitted to him the authority to teach Chinese Zen. Forming, with colleagues, the Western Chan Fellowship, Crook has developed a programme of retreats adapted to Western Zen practitioners. He also leads retreats at Dharma Drum Retreat Center New York.
John. H. Crook, Catching a Feather on a Fan: Zen Retreat with Master Sheng Yen. Element Books Ltd, 1991. ISBN 978-1852301941
John. H. Crook, Simon Child, Zarko Andricevic, Max Kalin, and Master Sheng-yen. Chan Comes West. North Atlantic Books, 2005. ISBN 978-1556435430
John. H. Crook and R. P. Michael. Comparative Ecology and Behaviour of Primates. Academic Press Inc, 1973. ISBN 978-0124934504
John. H. Crook and Henry Osmaston, Himalayan Buddhist Villages: Environment, Resources, Society and Religious Life in Zangskar, Ladakh. Bristol Classical Press, 1994. ISBN 978-0862923860
John. H. Crook and David Fontana, Space in Mind: East-West Psychology & Contemporary Buddhism. Thorsons/Element, 1993. ISBN 9781852301545
John. H. Crook. The Evolution of Human Consciousness. Oxford University Press, 1984. ISBN 978-0198571872
John. H. Crook and James Low, The Yogins of Ladakh: A Pilgrimage Among the Hermits of the Buddhist Himalayas. Motilal Banarsidass, 1997. ISBN 978-8120814622
John H. Crook, World Crisis and Buddhist Humanism. End Games: Collapse or Renewal of Civilisation. New Age Books, 2009. ISBN 9788178223254