You can personalise your JIRA account to use a language of your choice.
To choose a language:
- Click your user name at the top-right of the page to open your User Profile at the 'Summary' tab page.
- In the 'Preferences' section, click the edit icon at the top-right. The 'Updated User Preferences' dialog box opens.
- Select your language from the 'Language' drop-down list:
Screenshot: Update User Preferences Dialog Box
- Click the 'Update' button.
Please also see Choosing a Default Language.