Where is the address of the Commissioner's Office of China in Hong Kong?

I don’t know what organization you are talking about. .

There are two:

1. Office of the Commissioner of the Ministry of Foreign Affairs of the People's Republic of China in the Hong Kong Special Administrative Region

42 Kennedy Road, Central, Hong Kong No.

2. Liaison Office of the Central People's Government in the Hong Kong Special Administrative Region (referred to as the Liaison Office of the People's Republic of China)

No. 160 Connaught Road West, Hong Kong

One of them is Diplomatic Affairs agencies under the Ministry.