Lui Lok was a Hong Kong police detective known for his acts of corruption during the 1960s and 1970s. He was wanted by Hong Kong's Independent Commission Against Corruption (ICAC). Although his illegally obtained assets were partially seized by the authorities, legal obstacles prevented his extradition from Taiwan and later Canada, which allowed him to ultimately escape prosecution.

The Hong Kong Police Force (HKPF) is the primary law enforcement, investigative agency, and largest disciplined service under the Security Bureau of Hong Kong.