Bau Wong a/l Bau Ek[1] is a Malaysian politician who has served as State Leader of the Opposition of Kedah since November 2023 and Member of the Kedah State Legislative Assembly (MLA) for Sidam since August 2023.

He served as Special Officer to the Members of Parliament (MPs) for Sungai Petani Johari Abdul and Mohammed Taufiq Johari from 2018 to 2023.

He is also the first ever Siamese Leader of the Opposition and elected representative in the history of Kedah.

[2] Bau Wong was formerly the special officer to former Sungai Petani Member of Parliament, Johari Abdul from 2018 to 2022 and then continued the same service to Dr Mohammed Taufiq Johari who won the parliamentary seat in the 15th General Election.

On 28 July 2023, he ended his service to contest in the state elections.