Santa Claus is one of those nearly-universal Christmas icons, although he goes by a different name in many countries.
Santa Claus
Santa Claus
In Thai, Santa Claus is ซานตาคลอส.
They call him Santa Claus, or Santa.
We canadians call him Santa Claus, also. Don't worry about it.
They call him Santa Claus. Exactly the same name as you call him.
He is still called Santa Claus there, in Alaska.
Santa Claus, or Father Christmas.
Santa Claus usually retains the name Santa Claus, or Saint Nicholas, or Father Christmas, whatever name is used by the researchers' culture. You can see all the translations of 'Santa Claus', below.
People in Pakistan call Santa Claus Baba Christmas
People in England often call him Father Christmas, but some of them call him Santa Claus as well.
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.