Oregan Hoskins announced on Wednesday that he was stepping down as president of the South African Rugby Union.
Hoskins advised SA Rugby at a meeting of the General Council in Johannesburg of his decision on Wednesday.
"I have enjoyed a remarkable ten and a half years in one of the most high-profile roles in South African sport and have enjoyed some incredible highs," said Hoskins.
"It has been a pleasure and a privilege and I want to thank everyone involved in South African rugby for the fantastic journey we have shared.
Hoskins was elected for a two-year term in February 2006, when he opposed incumbent, Brian van Rooyen. He was elected to the executive of the International Rugby Board (IRB) - now World Rugby - in the same year and rose to be vice-chairman of the organisation before opting not to stand for re-election in May this year.
He was re-elected as SA Rugby president one a further three occasions in 2008 (two years) and for four-year terms in 2010 and 2014.
SARU said during Hoskins' presidency, the achievements included the winning of the Rugby World Cup in 2007, a series victory over the British & Irish Lions, the Tri-Nations title and Sevens titles - including Commonwealth gold and an Olympic bronze medal at the Olympics. A number of world age group titles were also won.
Mark Alexander, deputy president, will act as interim president until an election can be held.
