Lawrence Ang Boon Kong (Chinese: 洪文光; pinyin: Hóng Wén Guāng) is a Singaporean lawyer who was Director of the Commercial Affairs Department from 1991 to 1999. He replaced Glenn Knight after the latter came under investigation by the Corrupt Practices Investigation Bureau. He stepped down in October 1999 when the CAD was merged with the Commercial Crimes Division of the Singapore Police Force.
Before becoming CAD Director, Ang had assisted the Commission of Inquiry into the death of National Development Minister Teh Cheang Wan, who committed suicide in the midst of corruption investigations. He also was the Deputy Public Prosecutor in the trial of Francis Seow. In Seow's trial, lawyer V. K. Dube complained that Ang had misconducted himself by making remarks which were "unwarranted, baseless and untrue." The Law Society fined Ang S$1,000 but he appealed to the High Court, which waived the fine after deciding that the Law Society had no jurisdiction to discipline Ang because he did not have a practising certificate, even though he was an advocate and solicitor. On appeal to the Singapore Court of Appeal, the Court decided that because Ang was an advocate and solicitor, the jurisdiction of the Law Society did extend to him notwithstanding his lack of a practicing certificate: however, on the facts they did not uphold the fine.
After stepping down, Ang continued to be Deputy Public Prosecutor in several cases. In 2001, he presented the prosecution's case against three men—Wan Kamil Mohamed Shafian, 34; Ibrahim Mohamed, 35; and Rosli Ahmat, 30—who had stabbed taxi driver Koh Ngiap Yong to death with a bayonet and stole the taxi, intending to use it as a getaway vehicle when robbing goldsmith shops. In the 2005 trial of Took Leng How over the murder of Huang Na, he opened the case by outlining the prosecution's argument that Huang Na had been sexually assaulted. He subjected the defence's psychiatrist, R. Nagulendran, to a vigorous cross-examination over the latter's diagnosis that Took was schizophrenic.
- Conrad Raj (23 March 1991). "Lawrence Ang is now acting head of CAD.". Business Times Singapore. p. 1.
- "NEWSFRONT - MRT trains to have happy images.". The Straits Times. 19 October 1999.
- Ben Davidson (27 March 1990). "High Court quashes Law Society fine on DPP Ang for 'misconduct'". The Straits Times.
- Law Society of Singapore v Ang Boon Kong Lawrence  3 SLR(R) 825;  SGCA 86
- Ven Sreenivasan. (2 December 1998). "MP Choo Wee Khiang charged with helping man to cheat.". Business Times Singapore.
- "Leeson formally charged in Singapore.". Reuters News. 24 November 1995.
- Murray Hiebert (14 December 1995). "FINANCE --- Next Case: Leeson conviction may not be Barings' last". Far Eastern Economic Review. p. 70.
- "Barings trader pleads guilty : Leeson awaits sentencing for stock fraud". Kitchener-Waterloo Record. 10 December 1995. p. A4.
- Alethea Lim. (26 June 2001). "Three on trial for cabby's brutal killing.". The Straits Times.
- Chong Chee Kin, Tanya Fong (12 July 2005). "Huang Na sexually assaulted, says DPP". The Straits Times.
- Chong Chee Kin (29 July 2005). "Took all smiles as trial ends". The Straits Times.
- "Courtroom showdown sparks applause". The New Paper. 27 July 2005.
- Chong Chee Kin (27 July 2005). "DPP locks horns with defence psychiatrist". The Straits Times.
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