* United States
* Canada
* Australia
* New Zealand
* Indonesia
* Thailand
* Vietnam
* South Korea
* Japan
* Philippines
* Russia
* Mongolia
* Myanmar
* Laos
* Cambodia
* Brunei
* East Timor
* And many others
It's important to note that Mandarin is just one dialect of Chinese. Other dialects like Cantonese, Hakka, and Wu are also spoken in China and other parts of the world.