For specific or bypassed sections of the Princes Highway, see the following:  Princes Highway, Wollongong, Old Princes Highway, Victoria.

The Princes Highway is a major road in Australia, extending from Sydney to Port Augusta via the coast through the states of New South Wales, Victoria and South Australia. It has a length of (along Highway 1) or via the former alignments of the highway, although these routes are slower and connections to the bypassed sections of the original route are poor in many cases.