Grahame White will retire from his role as chief executive officer of the Historic Sports Car Club at the end of the year.
After two decades at the helm as CEO, he will take on a new consultancy role within the club.
"It has been a privilege to work for the HSCC and all the members and I will continue to help in planning its future," White said.
White, who was competitions manager for the British Automobile Racing Club in the 1960s, worked extensively in the original Formula 2 championship before becoming sales manager at Chevron.
He later managed Richard Lloyd's Group C team and was persuaded to take over the running of the HSCC in the mid-1990s.
At the time, the club was in a perilous financial situation, but White turned its fortunes around to build it into Britain's leading race organiser for historic racing with a particular focus on the cars of the 1960s and '70s.
Today, the HSCC has around 1000 active members, a full race programme for 15 different categories as well as the role of race organiser for the Silverstone Classic.
"Over the last two decades, Grahame has gained huge respect in the wider field of motorsport and has done an outstanding job to build the club into one of Europe's leading organisers of historic racing," said club chairman Frank Lyons.
"When Grahame took over the role of CEO, the club was going through difficult times.
"He has guided the HSCC forward, building it into a very successful organisation which now promotes major historic events throughout the UK for over a thousand members.
"I am delighted that the club will continue to benefit from his close involvement into 2019 and beyond."