Private Myengwa Beleza was one of the first black South African soldiers to be killed in France during the 1914-1918 war.
He was among some 25,000 other black South Africans who had volunteered to serve as part of the Native Labour Corps.
Beleza died on November 27, 1916 and was buried in a civilian cemetery at the port city of Le Havre as South Africa's white minority government did not allow black soldiers to be buried at the memorial.
Beleza becomes the first black to be buried at the memorial -- which was unveiled in 1926 -- after his remains were exhumed on June 4 in a process organised by the South African embassy in France.
"The reinterment process is part of government efforts to restore the dignity particularly of those black South Africans who made an immense contribution towards world peace," Ramaphosa's spokesman Ronnie Mamoepa said.