Au Nok-hin (Chinese: ???; born 18 June 1987) is a pro-democracy politician in Hong Kong.
He is the former member of the Legislative Council for Hong Kong Island from 2018 to 2019 and member of the Southern District Council for Lei Tung I from 2012 to 2019.
From 2016 to 2017, Au was the convenor of the Civil Human Rights Front.
In the 2018 Legislative Council by-election triggered by oath-taking controversy, Au replaced Demosisto candidate Agnes Chow who was disqualified over her alleged pro-independence stance.
He was elected with more than 130,000 votes.
Au was a member of the Democratic Party before he quit in 2017.
Due to Chow's disqualification being ruled as unlawful by the court, the by-election was seen as invalid and Au was unseated in December 2019 as a result.