In this list, we have compiled the smart cities in Asia that have shared out open data in an aggregated open data portal. For the scope of this list, we have included only the open data portals of cities in a country and not the country's national open data portal, with the exception of Singapore as a city-state.

In general, we note that more cities in North Asia have embarked on city-level open data initiatives compared to cities in South Asia. The countries with the most city-level open data portals in Asia are Japan (14+ city portals), South Korea (9+ city portals) and Taiwan (7+ city portals). For mainland China, while its innumerable cities have begun to roll out data portals, it is only beginning to lay down the open data framework, with Shanghai piloting the trial open data system in October 2019.

Some of the notable well-designed city open data portals with rich datasets include:

• Hong Kong - https://data.gov.hk/en/
• Seoul - https://data.seoul.go.kr/
• Singapore - http://data.gov.sg/
• Shanghai - https://trial.data.sh.gov.cn
• Taipei - https://data.taipei
• Tokyo - http://opendata-portal.metro.tokyo.jp/www/index.html

This list of  more than 200 smart city open data portals is compiled in conjunction with the Insights article "Smart Cities - The Rise of Aggregated Open Data Portals".