In a heartwarming video of their interaction, the little girl grinned as she sat with St. Nick in the Cleveland Centre in Middlesbrough, England on November 5.
"Sorry, she can't talk very well," her mom told him.
Santa then asked if the child uses sign language, and her mother replies: "Yeah, she does animals and things like that."
As Santa signed to the girl, she told him that she wants a scooter for Christmas.
More than 280,000 people have watched the touching video on YouTube.