Andrew Chiu Ka-yin (Chinese: 趙家賢; born 17 July 1985) is a Hong Kong politician, democracy activist, experienced accredited mediator and arbitrator.

[2] In 2017, he was conferred an honorary doctorate degree in Public Administration from SABI University,[3] an online private higher education institute registered under French Government's 'Ministry of Higher Education, Research and Innovation', in recognition of his contributions and commitments to the public sector over a decade, including the fact that Chiu was the youngest elected representative in the 2007 Hong Kong local elections (22 years old).

Chiu joined the Democratic Party in 2004 and was first elected to the Eastern District Council in Tai Koo Shing West in 2007 and was re-elected in 2011 and 2015.

[5] In 2014, he succeeded Joseph Cheng Yu-shek to become the convenor of the Power for Democracy, a mediating platform for electoral coordination between the pro-democratic parties.

[9] On 6 January 2021, Chiu was among 55 members of the pro-democratic camp who were arrested under the national security law, specifically its provision regarding subversion.