Johannes du Plessis Scholtz (14 May 1900 – 26 January 1990) was a South African philologist, art historian, and art collector.
Scholtz studied first at the University of Stellenbosch, completing an M.A. in 1920. He then took a job assisting the philologist J. J. Smith in editing Die Huisgenoot, but he moved shortly thereafter over to the Nasionale Pers to be head of the publication department. In 1924 he went to Amsterdam and in 1927 he received a PhD from the Gemeentelijke Universiteit. He returned to the Netherlands for two years (1929–1931) to pursue further studies in Dutch dialectology and structural linguistics, studies which formed the foundation of his later work in Afrikaans.
Upon returning to Stellenbosch, he worked again for J. J. Smith on the Woordeboek van die Afrikaanse Taal. He also worked under C. G. N. de Vooys at the University of Utrecht on his dissertation Die Afrikaner en Sy Taal, 1806-1875, for which he received the Hertzog Prize for scholarly prose (what is more, the award had existed until then; it was expressly created in order to honor him with it). In 1934 he accepted a lecturership at the University of Cape Town teaching Dutch and Afrikaans. In 1950 he became head of the Department of Dutch and Afrikaans and Hofmeyr-Professor, and in 1965 retired as emeritus professor to pursue linguistic and artistic scholarship without the pressure of university administration. After his retirement he received honorary doctorates from the University of Stellenbosch and the University of the Orange Free State. His final commemoration came in the form of a Festschrift entitled Dietse Studies, given on the occasion of his 65th birthday with contributions from the foremost South African scholars of the time, as well as notable Dutch scholars such as C. B. van Haeringen.
While others in South Africa, and to a lesser extent the Netherlands and Belgium, were still discussing origin of Afrikaans at a theoretical level only, Scholtz had been collecting and analyzing as much data as were available. He steered clear of theorizing, and his work was based on two great linguistic schools of the time: Leonard Bloomfield's descriptive linguistics, and N. S. Trubetzkoy's structural linguistics. Scholtz was the first in South Africa to employ these approaches and in so doing revolutionized the world of Afrikaans linguistics. His work remains to this day the high-water mark for the fields of Afrikaans philology and linguistics.
Scholtz sat on numerous committees such as the Taalkommissie of the South African Academy, the Van Riebeeck Society, the Historical Monuments Commission, the Archive Commission, and was one of the founders of the Vereniging vir die Vrye Boek. He was a member of the South African Academy of Arts and Sciences, the Maatschappij der Nederlandsche Letterkunde, the International Centre for Onomastics, and the Linguistic Society of America. He was also a co-trustee of the Irma Stern Trust.
The South African Academy of Arts and Sciences honored him with numerous awards: in 1970 with the first Langenhoven Prize for linguistics, and in 1974 with the first Stals Prize for art history. The Kaapse Drie-Eeuestigting added to this and celebrated his work on the Irma Stern Trust with an honorary award in 1972.
His first scholarly work was an M.A. thesis on the language of the fishermen of Lambertsbaai, written under the tutelage of J. J. Smith, (which has subsequently been lost). In 1934 his publishing life began with the article "Afrikaanse geskrifte van Louis Henri Meurant uit die jare 1844-1850" in Tydskrif vir Wetenskap en Kuns, Jg. 12, Nr. 4, Julie 1934.
The most productive period for Scholtz, however, was after 1950, after his retirement from UCT in 1965. He now had time for his art studies, and also to publish analyses of the textual material that L.C. van Oordt had mined out of the Kaapse Argief. By this point in his intellectual life, Scholtz was in a perfect position to evaluate these texts.
Scholtz's monographs on Strat Caldecott, Pieter Wenning, D. C. Boonzaier, Moses Kottler, and Katrine Harries remain authoritative. Not only are they the best works on their subjects, but "Strat Caldecott, 1886-1929" has become a prized possession for collectors of Africana.
He became interested in the fine arts at the height of classical modernism's zenith. In 1923, while at the National Press, he met the "famous and feared" D. C. Boonzaier, cartoonist and supporter of the fine arts in Cape Town. Through Boonzaier he became acquainted with art critic Bernard Lewis and sculptor Moses Kottler . Eventually, his circle of artist-friends was to include the painters Enslin du Plessis, Jean Welz, Florence Zerffi and Irma Stern, the graphic artist Katrine Harries, and, less intimately, Hendrik Pierneef, Erich Mayer, and Ruth Prowse, the members of a school of South African Impressionism in the years 1915–1935. This was perhaps the most important epoch in South African art, and Scholtz was there for all of it. Scholtz's literary friends were famous in South Africa: M.E.R., N.P. van Wyk Louw, Dirk Opperman, and Boerneef.