Data.gov.hk 資料一線通 GOV'T
The site is developed by the Government Chief Information Officer for the public to obtain certain public sector information. Users can pull out data sets by topic or data providers that are mainly governmental agencies.
Code on Access to Information GOV'T
https://www.access.gov.hk/en/home/index.html
This site is not a data archive but contains important guidelines on access to government data, including what types of information are published regularly and what types will be provided only upon request.
HKSTP Data Studio: Dataset Library FREE
https://datastudio-api.hkstp.org/store/apis/list
The site shares APIs of about 300 data sets that were collected from the government, commercial firms, or NGOs. Data users can subscribe to the APIs free of charge for research or proof of concept. Prior account registration is required.
HKPORI 香港民意研究所 FREE
The site provides research and statistics on public opinion dated back to 1991. The "Research Reports," "Datasets," and "POP Polls" sections are particularly useful.
HKEX GOV'T
A comprehensive source of HK listed companies’ information including annual reports dated back to 1999, trading information on securities and derivatives markets, market data and statistics on Main Board and Growth Enterprise Market (GEM)
Air Quality Data GOV'T
https://cd.epic.epd.gov.hk/EPICDI/air/station/
Managed by the Environmental Protection Department
Air quality data dated back to 1991 recorded by regional monitoring stations