The 19-year-old is a product of the junior programme and this will be his fourth year with the Herd.
He also stepped up to play on the Bison’s top three lines, after Michael Wales was injured on the final weekend of the regular league season.
A former Great Britain under-18 international, he was also a reserve for the national under-20 team last season.
Bison player/coach Doug Sheppard is pleased to have another of his young guns returning and said: “Cam has a lot of potential and he continues to progress. I am looking forward to coaching him for another season.”
Wynn, who lives in Kempshott, is also pleased to pull on a senior Bison jersey once more, having played all his ice hockey for Basingstoke.
He will start to study at the University of Surrey in September and is looking forward to hitting the ice with Herd once again at the same time.
The teenager said: “Having come through the ranks it always feels good playing for the Bison, as when I was younger that was all I wanted to do.
“I think we have a lot of depth again in our line-up and I see no reason why we cannot win some more silverware this season.”