Former chief executive Peter Lawwell will return to Celtic as non-executive chairman at the start of 2023.
The 63-year-old, who was chief executive for nearly 18 years before stepping down last summer, will succeed retired Ian Bankier.
Celtic have won 29 trophies, including an unprecedented ‘quadruple treble’ during Lawwell’s tenure as chief executive.
“As a lifelong Celtic supporter, it’s a great privilege to be asked to take on this role,” he said.
“These are exciting times for the club and I look forward to contributing to success.
“I will offer my support and guidance to the board and management team to ensure we continue to drive the club forward and protect and promote the interests of our supporters.”
Celtic have won 13 league titles as well as the ‘treble quadruple’ – a dozen successive domestic trophies – when Lawwell was general manager and his return was hailed by manager Ange Postecoglou.
“It’s fantastic news for the club. He was instrumental in my arrival at Celtic,” said the Australian.
“I know the love he has for the club and I know his wealth of experience and knowledge will be invaluable to all of us as we move forward together.”
Celtic major shareholder Dermot Desmond said Lawwell was the “outstanding candidate” to succeed Bankier.
“Peter is a man of the highest quality, someone who has already served the club with real commitment and expertise,” Desmond said.
“He is perfectly placed to work with the board to ensure we continue to compete in Scottish and European football and to manage the challenges and opportunities in a European context.”