Port Wakefield Road and Port Wakefield Highway are an important South Australian highway. They connect Adelaide to the Yorke Peninsula, Port Augusta, northern and western South Australia, the Northern Territory and Western Australia. They are designated National Highway A1 and a part of the National Highway. They are named after Port Wakefield, the first government town north of Adelaide. Historically, the whole route was named Port Wakefield Road, however following the opening of the Northern Expressway, the route north of that junction was named Port Wakefield Highway.