Yes. They call him Santa Claus or Father Christmas.
Father Christmas
A lot of them refer to themselves as British, but some will use other terms, depending on what part of the United Kingdom they come from. Many people from England call themselves English for example.
I don't know, what do people in Madagascar call Santa Clause?
Santa Claus
In the United States, we mostly call him Santa Claus or sometimes, St. Nick. Most often, Americans shorten it to just "Santa".
It's an abbreviation: U for United K for Kingdom. Just like U for United S for States.
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People in Ireland call him Santy, Santa and Santa Claus. Santa Claus comes from Saint Nicholas and can then be shortened to Santa Claus or just Santa or Santy. So people in Ireland use those names, like people in many countries do.
聖誕老人 that is how you call santa
They call him Santa Claus. Exactly the same name as you call him.
People in Antactica all came there from other countries, and they would call Santa whatever they call him in their native languages.