Mostyn, who played a pivotal role in AFC Bournemouth’s survival and then rise from League Two to the Premier League, will support the club and its corporate development panel.
It is an important milestone for the Lions who, on the pitch, are eyeing up a league title and promotion as they sit top of the Regional Two South Central table with two games to play.
Mostyn said: “I'd only ever been to one rugby match in my life.
“But as soon as I entered the Bournemouth Rugby clubhouse, I could feel the warmth that surrounded the players, the staff, executives and supporters. I felt an instant connection with everyone present.
“I had a similar feeling, when I walked through the doors of the football club all those years ago in 2006.
Jeff Mostyn hugs Brett Pitman (Image: Richard Crease)
“And while my first love will always remain with football, and the Cherries, I believe I can provide some guidance of what it took to create the incredible success that we had at AFC Bournemouth and try to emulate that success with Bournemouth Rugby, in whatever shape or form it takes.”
He will work closely with the club’s leadership team, helping to provide strategic direction to support their ambitions on and off the pitch.
Club owner Matthew Barker was thrilled with the appointment: “Having recently become sole owner of Bournemouth Rugby, it was important for me to bring stability to the club where there has not been financial security for many years.
“It’s my sole task and ambition to create a secure financial and sustainable base for the club.
“Now with Jeff Mostyn supporting the club and the corporate development panel, we have a figurehead to help us grow.
Dave Scupham (11) is congratulated by his teammates after scoring (Image: Simon Carlton)
“Jeff is an important addition that gives us credibility and knowledge that we’ll all benefit from. I see him very much as a mentor and a partner working with him. He's also a great guy!”
Club chairman Phil Sinkinson OBE added: “We are delighted that Jeff has agreed to join us. He will bring a wealth of knowledge and expertise.
“Everybody knows him in the town and he’s been massively successful. We’re excited about what he will bring us in terms of corporate development.
“It's a sign of progress for this club and where we are going under the leadership of Matthew Barker and the executive board. Our aim is to grow both as a community rugby club and as a corporate community business.
“This latest appointment underlines Bournemouth Rugby’s commitment to strengthening its leadership and building sustained success.”