how to change the overall system in power BI from Thai to english language (still use Thailand as region))

Hello @Panyada Cholsakhon ,

Thank you for contacting Microsoft Community.

Glad to be here with you!

Please kindly check and follow those steps below 😊

1. Change the User Interface Language (Language UI)

Go to File → Options and settings → Options

Under the Global section, select Regional Settings

In the Language section, choose English

2. Keep the Regional Format as Thailand

Still inside Options → Regional Settings:

Leave Model language as default

Set Model regional settings to Thai (Thailand)
Click Ok and Power BI may ask you to restart the application.

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Thank you again for your patience and support!

Dustin Tran