Brakna is a region in south-west Mauritania. Its capital is Aleg. Other major cities/towns include Bogue'. The region borders the Mauritanian region of Tagant to the north-east, the Mauritanian regions of Assaba and Gorgol to the south-east, Senegal to the south-west and the Mauritanian region of Trarza to the north-west. The Senegal river runs along the regions border with Senegal.