What is the name given to a mayor of dutch German or flemish town?

There isn't a specific title for a mayor of a Dutch, German, or Flemish town. The word for "mayor" is generally the same across these languages, but it might vary slightly in pronunciation or spelling:

* Dutch: Burgemeester

* German: Bürgermeister

* Flemish: Burgemeester (same as Dutch)

So, the title you would use for a mayor of a Dutch, German, or Flemish town would simply be Burgemeester, Bürgermeister, or Burgemeester, respectively.