Nicolaas Maartin Vergunst (Cape Town, 1 September 1958) is the author of Knot of Stone: the day that changed South Africa’s history. Knot of Stone was published by Arena Books in the United Kingdom and the United States in 2011.
Vergunst studied art and cultural history at Stellenbosch University and University of KwaZulu-Natal. From 1988 he worked at the South African National Gallery in Cape Town (later transformed into the Iziko South African Museum) where he curated Hoerikwaggo: Images of Table Mountain, an exhibition about the ever-shifting European perceptions of the South African landscape. The book produced for this exhibition has had several reprints.