Professor Patrick Troy AO is a sometime engineer, town-planner, transport planner and public servant, visiting fellow at the Centre for Resource and Environmental Studies, Australian National University, adjunct professor at Griffith University and visiting professor City Futures Research Centre, Faculty of Built Environment, UNSW.

He is the author or editor of 14 books on Australian cities, including The Cost of Collisions (Cheshire, 1971), For the Public Health (Longman Cheshire), The Perils of Urban Consolidation (Federation Press, 1996), Australian Cities(Cambridge University Press, 1995) and A History of European Housing in Australia (Cambridge University Press, 2000).