Stephen Lo Wai-chung GBS PDSM PMSM JP (Chinese: 盧偉聰; born 19 November 1961) is a Hong Kong retired law enforcement administrator.

He is specialised in "criminal investigation, international liaison, service quality management, security and operational duties," according to the government official website.

[1] On 4 May 2015, the State Council of the People's Republic of China appointed Lo Commissioner of Police, succeeding Andy Tsang Wai-hung.

[6][7] In August 2020, Lo and ten other officials were sanctioned by the United States Department of the Treasury under Executive Order 13936 by President Trump for undermining Hong Kong's autonomy.

[8][9][10] On 10 February 2021, Carrie Lam awarded Lo the Chief Executive's Commendation for Government/Public Service for his "significant contribution to combatting the social disturbance in 2019 and safeguarding national security".