This is one of the most frequent question. AmCharts can display  text  in Chinese, Japan, Russian, Arabic, Jewish and other languages, also special letters of Latin-based alphabets.

The main trick is the following: you have to save your data or settings (or html if your data or settings are inside html) files using UTF-8 encoding.

It's not enough to have this line in the top of your XML:

<?xml version="1.0" encoding="UTF-8"?>

Different text editors has a different place where encoding of the file is set. For example, in PSPad encoding is set under "Format" menu.

You can set encoding with Notepad when saving the file:

1) Click File->Save as...
2) in the "Save as" window locade "Encoding" dropdown.
3) select "UTF-8"
4) save the file

Note, that your special characters in data or settings file should look as they are. You can't use entities - they will not be parsed.