Barwell has overseen the redevelopment of the Saints ground
Northampton Saints chairman Keith Barwell will be replaced by his son Leon when he stands down in September.
Having previously been involved with the club for a number of years, Barwell Sr took over at Franklin's Gardens when the game went professional in 1995.
During his time as chairman the Saints have won the Heineken Cup, European Challenge Cup and LV= Cup.
"I have had the fortune of being involved in club rugby during a very exciting time," Keith Barwell said.
In 2009 Barwell was honoured with an OBE for services to Northampton.
He added: "I have worked with a superb board of directors and some excellent directors of rugby and coaches. It has been a roller-coaster ride, with both silverware and relegation, and every minute of it will live long in the memory.
"Although I have been chairman, I am first and foremost a Saints fan and have had the privilege of watching some world class players wear the black, green and gold.
"It has also been an honour to serve the Saints fans, who put in considerable amounts of time and money supporting the club, and we have had an excellent relationship, as I have had with the staff at the club."
After stepping down Keith Barwell will remain on the Saints board of directors for another 12 months. Tony Hewitt will take on the newly created role of vice-chairman.
Leon Barwell has been involved with the club since 1999, while Hewitt has been on the board of directors since 1995.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.