The news was confirmed by colleagues at the University of Pennsylvania, where Hopkins was a visiting professor. He died of natural causes over the weekend at his home in West Philadelphia.
Hopkins, who was born in 1953, worked for the Olympic Delivery Authority from 2007 to 2011 and was instrumental in giving landscape a pivotal role in the games. This was recognised through the award of the Landscape Institute's Peter Youngman Award for an outstanding contribution to landscape.
Hopkins wrote, with Peter Neal, The Making of the Queen Elizabeth Olympic Park published last year. and was currently researching and writing another book The Global Garden - Ecological Economics, Planning and Design for the 21st Century.
He had worked in private practice, had taught extensively, and was an active member of the Landscape Institute.
A full appreciation will appear in due course.
Read an interview with John Hopkins.
See LDA Design's tribute.