Rob Hopkins (born 24 June 1968) is an English environmental activist and writer, based in Totnes, England. He is best known as the founder and figurehead of the Transition movement, which he initiated in 2005. Hopkins has written six books on environmentalism and activism.

According to Bill McKibben, "there’s no one on earth who's just done more [environmental] stuff – and inspired more doing – than Rob Hopkins".

Born in Chiswick, London, Hopkins grew up in London until the age of 12, when he moved to Wiltshire, attending St John's School, before then moving to Bristol where he went to the Bristol Waldorf School for two years, followed by Henbury School to earn his A Levels. This was followed by an art foundation course at Bower Ashton Art College, also in Bristol.

From 1988, he spent two and a half years living at Istituto Lama Tsong Khapa, a Tibetan Buddhist monastery in Tuscany, Italy, working as the house manager. He then spent a year travelling in India, Pakistan (including a visit to the Hunza Valley), China, Tibet, Hong Kong and then back to India where he met Emma, who has been his partner since then. They settled in Bristol, where Rob earned a degree in Environmental Quality & Resource Management at the University of the West of England, and also undertook his Permaculture Design Course.^{[citation needed]}

Hopkins holds a first class Honours degree in environmental quality and resource management from the University of the West of England (1993–1996), a Master of Science in social research (2007) and a doctorate at Plymouth University (2011) on the subject of transition (Localisation and Resilience at the Local Level: The Case of Transition Town Totnes Archived 6 December 2017 at the Wayback Machine). He is a visiting fellow at Plymouth University, and in July 2013 was awarded an honorary doctorate by the University of the West of England. The 4 October 2016, he was awarded an honorary doctorate by the University of Namur.

In 1996, Rob and his family moved to south-west Ireland, to West Cork. He initially worked with An Taisce West Cork, writing and illustrating a booklet called Woodlands for West Cork!. He began teaching permaculture, initially as short courses, and building up to running full design courses, initially as an evening class. Together with another family, he and Emma set up Baile Dulra Teoranta, a charity, with the intention of creating an ecovillage project. In 1999, with another family, they bought The Hollies, a farm near Castletown, Enniskeane. After a few years, they were granted planning permission for an ecovillage development.

In 2001, he started and taught the Practical Sustainability course at Kinsale Further Education College, initially as a one-year course, and later as the first two-year Permaculture course in the world. Between 2003 and 2005, its students built the Wooden O Theatre, an amphitheatre using local materials. The Hollies Centre for Sustainability ran a series of courses in natural building and built two new cob houses, using local materials. In October 2004, Rob and Emma's house was destroyed in a fire.

In 2004, he became aware of the concept of peak oil, and set his students the task of applying permaculture principles to addressing this challenge. The output of this student project was the ‘Kinsale Energy Descent Action Plan’, which was uploaded to the college website. It was downloaded by interested parties around the world. In July 2005, Kinsale FEC hosted Fuelling the Future Archived 5 July 2017 at the Wayback Machine, a conference on peak oil and solutions to it.