Colin Sexstone will step down as chairman of Championship club Bristol City at the end of May.
He will be succeeded by current director Keith Dawe, with the rest of the board remaining unchanged.
The 63-year-old told BBC Points West: "It's a strange feeling but I feel like everything has to come to an end and now is the right time."
Sexstone confirmed that he would now turn his attention to other ventures after 16 years working in sport.
"It's a mutual decision and I've been thinking about it for quite some time," he continued.
"With the new board settled in, they've found their feet and they've got an outstanding manager who will bring them success.
"We've maintained our Championship status and after a discussion with Steve [Lansdown, Bristol City owner] - explaining what I want to do with the rest of my career - we felt this was right for both sides."
The Robins have enjoyed a bright period since Sexstone joined the club's board in 2001 after a five-year spell with Gloucestershire County Cricket Club.
In that time, they have won promotion to the Championship, lifted the Football League Trophy and narrowly missed out on promotion to the Premier League after losing the 2008 play-off final to Hull City.