Cowell is a coastal town on Franklin Harbor on the eastern side of the Eyre Peninsula, in South Australia on the Lincoln Highway 111 km south of the major town of Whyalla. It is 493 km by road from Adelaide.
Franklin Harbor is a natural harbour 49 km² in area with a channel to the sea just 100 metres wide.
The town of Cowell is the major population centre of the District Council of Franklin Harbour, and the centre of an agricultural district, farming wheat and sheep. The district covers an area of 3,283 square kilometres with a district population in 2011 of 1070. Fishing, and more recently, oyster farming has also been an important industry.