Peter William Geoffrey Newman AO (born 1945) is an environmental scientist, author and educator based in Perth, Western Australia.

He was closely associated with community opposition to the closure of the Fremantle Railway in 1979 and subsequent redevelopment of the metropolitan rail system from 1983 to the present.

He led an international research project with colleague Jeff Kenworthy on transport practices and structures (original data collected on 33 global cities).

Drawing on examples from many parts of the world, the authors show how urban redevelopment in some cities has involved harvesting rainwater, greening roofs, and producing renewable energy.

Other cities have biodiversity parks for endangered species, community gardens that support a connection to their foodshed, and pedestrian-friendly spaces that encourage walking and cycling.