The actor best known as "The Fonz" has spent the past two years bringing "Happy Days" to school children across England that share his condition.
His work in helping pupils confront the problems that dyslexia can cause saw him awarded an honorary OBE yesterday [15 Sept].
Winkler had to cope throughout school with undiagnosed dyslexia, and was well into his run as Arthur Fonzarelli on "Happy Days" before he discovered he was dyslexic.
"When I was growing up no one knew what learning challenges were. So, I was called 'stupid' and 'lazy,' because I was very verbal," Winkler said.
With BUPA estimating 375,000 UK pupils have dyslexia, Winkler wants to offer the kind of support he never received.
"I wanted to be an actor, but I wasn't even able to do school plays because my grades were so low," he said.
Despite a lack of encouragement at school and at home (his parents called him "dumb dog") Winkler has become a successful actor, producer, director and now author.
Alongside co-author Lin Oliver, he created children's book series "Hank Zipzer: The World's Greatest Underachiever" based loosely (and lightheartedly) on his own struggles growing up with dyslexia.
The 17 books form the basis of Winkler's school tour - something he describes as a career highlight.
"I walk in and ask if anybody has trouble in school and one or two raise their hands," he said, "By the time I've read to from "Hank Zipzer" everybody wants to be dyslexic."
Izzy Papworth from Aylesbury is one of many pupils to have benefitted from a talk with "The Fonz".
"It was a big, big help. Teachers and friends know how to deal with it [now] and I get lots more help than I used to," she said.
While he'll always be the 70s "king of cool", Winkler would also like to be remembered as a pioneer of dyslexia acceptance.
"Receiving the OBE is a very humbling experience. I'm flattered to have my work recognised, and hope to continue showing kids that a learning difficulty isn't a disability."