* Shawn: This is the most common spelling, and is of Irish origin.
* Shaun: This is another common spelling, also of Irish origin.
* Shon: While less common, this spelling is sometimes used, particularly in certain regions or families.
* Sean: This spelling is also Irish, but can be pronounced differently than Shawn or Shaun.
It's best to ask the person how they spell their name if you're unsure.