Port Franks is a small Southern Ontario community in the municipality of Lambton Shores, Lambton County in southwestern Ontario, Canada. It is located along Kings Highway 21 near Pinery Provincial Park, about 8 kilometres (5.0 mi) north of Thedford, Ontario. Archaeological evidence suggests that human habitation and use of this site date back thousands of years, and that locally obtained flint was manufactured at the so-called 'flint chipping beds' in the vicinity long before the period of European contact with First Nations peoples in the Great Lakes Basin.