Lui Lok CPM (simplified Chinese: 吕乐; traditional Chinese: 呂樂; born Lui Mo Lok (吕慕乐; 呂慕樂); 16 May 1920 – 13 May 2010) dubbed as 'The Five-Hundred-Million-Dollar Inspector', was a former Hong Kong Detective Staff Sergeant I. He became notorious for his acts of corruption during the 1960s to 1970s during British Hong Kong period, and being wanted by ICAC.