Reverend Stephanus Jacobus du Toit (October 9, 1847 – May 29, 1911) was a South African who pioneered the recognition of the Afrikaans language. He was the leader and one of the founder members of the Genootskap van Regte Afrikaners (Society of True Afrikaners) which later merged with the Zuidafrikaansche Boeren Beschermings Vereeniging (South African Farmers' Protection Association) to form the Afrikaner Bond.
S.J. du Toit was editor of the first Afrikaans newspaper Die Afrikaanse Patriot which was succeeded in 1905 by the Paarl Post.
His son Jakob Daniël du Toit, known by the pseudonym Totius, was also a pioneer of the Afrikaans language and the first to translate the Bible into Afrikaans.