Sordell will support YGAM on a voluntary basis to provide insight to inform their education programmes, with a specific focus on mental health.
The 29-year-old retired from professional football last year, citing his mental wellbeing as a major factor behind his decision.
“I’m delighted to become an ambassador for YGAM,” said Sordell. “I joined the YGAM away day a few months ago and I was blown away by the passion and enthusiasm of everyone that works to deliver their education programmes.
“It’s amazing to see teachers, parents, youth workers and people with lived experience come together to safeguard future generations. It is very pleasing to see education around mental health form such a pivotal part of their resources.
“I’ve also been really impressed with their collaborations with football club community trusts and I’m looking forward to supporting their great work.”
Since retiring, Sordell has helped raise awareness of issues related to mental health in football, and has been involved with different charity organisations, including the Campaign Against Living Miserably (CALM).
He also played a role in The Duke of Cambridge’s Heads Up campaign, led by the Football Association and the mental health initiative Heads Together.
Lee Willows, YGAM chief executive added: “This is another proud moment for the whole YGAM team. Marvin is an inspiration to many of us and he has done more to raise awareness of mental health than any other footballer.
“Lived experience is at the heart of everything we do and Marvin brings a very authentic perspective to our work around mental health.”