The N11 is a national route in South Africa which runs from the Botswana border at Groblersbrug, through Mokopane, Middelburg, Ermelo and Newcastle to end at the N3 just after Ladysmith.

Newcastle is the third-largest city in the province of KwaZulu-Natal, South Africa and is the province's industrial centre. The city has four industrial areas. Newcastle is known as the "New City" The majority of its citizens reside in Newcastle East in the main townships of Madadeni and Osizweni, with the balance residing in Newcastle West. Set at the foothills of the northern KwaZulu-Natal Drakensberg Mountains, Newcastle is located in the northwest corner of the province along the Ncandu River.