Morocco is the only rival to a joint bid to stage the event from the United States, Canada and Mexico with the FIFA Congress due to choose the hosts in Moscow on June 13.
In a statement posted on the website of the South African Football Association (SAFA), SAFA President Danny Jordaan said that his country will give the North Africans "the unqualified support to get another World Cup on the African continent in 2026".
"It is an old myth that Africa doesn't have the capacity and naysayers should stop using the political argument", he said.
Russia will cooperate with a Federation Internationale de Football Association investigation into racist abuse directed at French players by Russian fans during a pre-World Cup friendly last month, a Russian soccer official said on Monday.
The 2026 Morocco bid committee will hold a press conference in Casablanca later to inform the public about the visit.
Quoted by SAFA, Bell said "when South Africa talks on the continent, the rest of the continent listens hence it is vital for South Africa to support Morocco".More news: Commonwealth Games: England shock hosts Australia 52-51 in netball final
Due to FIFA's intention to spread the hosting rights for the World Cup more evenly across the globe, European and Asian countries were not allowed to bid for 2026 - this year's World Cup will be in Russian Federation with the next one in 2022 in Qatar.
Morocco has already made four unsuccessful bids to host the tournaments for 1994, 1998, 2006 and 2010, although it was close on three occasions.
South Africa's unwavering support followed the decision of the 29th Arab Summit to unanimously support the Moroccan bid.
Morocco enjoys strong support from African and Arab nations as well as wide backing from European countries.
Many countries have already expressed their full support for the Moroccan bid, including Lebanon, Palestine, Nigeria, Qatar, Botswana, France, Luxembourg, Russia, Belgium, Tunisia, Egypt, and Algeria.