Petrus Steyn, officially Mamafubedu, is a small farming town between Tweeling and Kroonstad, 35 km north-east of Lindley in the Free State province of South Africa. It is at the centre of an agricultural area known for wheat, maize, sunflower, potato, cattle, hunting, sheep production and forms part of the breadbasket in the Free State. It is the highest town above sea level in the Free State.