Ronald Cheng


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Ron Cheng handles both anti-corruption and data security and privacy matters and is co-located in Hong Kong and Los Angeles. He is one of very few Mandarin-speaking attorneys with experience in both US and Chinese criminal law enforcement. Ron served over 22 years at the US Attorney’s Office for the Central District of California. During that tenure, he argued more than 35 cases before the Ninth Circuit, including two en banc, and served as lead counsel or co-lead counsel in roughly 20 federal felony jury trials.


Corporate & Government Experience

  • Assistant US Attorney, US Attorney's Office, Central District of California (USAO/CAC); member, Cybercrime and Intellectual Property Crimes Section (2007-2015)
  • Department of Justice’s Resident Legal Advisor, US Embassy in Beijing (2005-2007)
  • Section Chief, Criminal Appeals Section, USAO/CAC (2002-2005)
  • Chief of Criminal Division, USAO/CAC (2001-2002)
  • Deputy Chief, Criminal Division, USAO/CAC (1999-2001)
  • Assistant US Attorney, USAO/CAC, in the Training, Criminal Appeals, and Major Crimes Sections (1992-1999)


  • Mandarin Chinese

Honors & Awards

  • Recognized as one of the “Most Influential Lawyers” in the areas of White Collar and Cyber Crime by the Los Angeles Business Journal (2015)


Bar Admissions

  • California
  • Hong Kong (registered foreign lawyer)

Court Admissions

  • US District Court for the Central District of California
  • Court of Appeals for the Ninth Circuit


  • Columbia University, J.D., 1988; Harlan Fiske Stone Scholar, 1985-1988; current developments editor, Columbia Journal of Transnational Law, 1987-1988 
  • Yale University, B.A., 1985: summa cum laude, distinction in the major, Phi Beta Kappa

Professional Activities


  • Honorable Alicemarie H. Stotler, US District Court for the Central District of California, 1988-1989
  • Honorable Ferdinand F. Fernandez, US Court of Appeals for the Ninth Circuit, 1989-1990



  • AmCham Shanghai, “Cybersecurity Law Implementation Update,” (September 11, 2017)
  • International Association of Privacy Professionals meeting “US-China Data Security,” (August 21, 2017)
  • Association of Corporate Counsel (ACC) in Singapore, “International Cybercrime: The Law Enforcement Dimension,” (March 14, 2017)
  • Financial Services Information Sharing and Analysis Center (FS-ISAC), Asia webinar on China Cyber Security Law (February 14, 2017)
  • American Chamber of Commerce in Japan, “International Cybercrime: The Law Enforcement Dimension,” (November 18, 2016)


  • PRC Consulate, Los Angeles, “Doing Business in the US: Issues Facing Foreign Businesses,” (April 2, 2019)
  • University of California, Los Angeles, “Comparative Counterterrorism Law and Policy: Cybercrime and the US-China Relationship,” (March 6, 2018)
  • University of Southern California, “Criminal Cyber Law and Policy: Cybercrime and the US-China Relationship,” (February 13, 2018)

In the News

South China Morning Post: Huawei’s US Government Lawsuit May Lift the Air of ‘Mystery’ Around the Chinese Telecoms Giant

March 21, 2019

Voice of America: Trump Linking Huawei Criminal Case, China Talks Deepens Concerns over Interference

March 20, 2019

Corporate Counsel: US Businesses with Ties to Huawei Need to Prepare for Disruption

March 12, 2019

CSO: What are the New China Cybersecurity Law Provisions? And How CISOs Should Respond

March 11, 2019

TIME, Feature Associated Press Interview with O’Melveny Partner Ronald Cheng

January 30, 2019

Associated Press: US Charges Chinese Tech Giant Huawei, Top Executive

January 28, 2019

O’Melveny Takes Part in SelectUSA’s China Road Show

March 19, 2018

Hong Kong Economic Times Quotes Cheng on Anti Corruption Efforts and Cybersecurity

December 21, 2015

O’Melveny Lawyers Author Financial Times Piece on China’s Draft Cyber Law

November 24, 2015

O’Melveny’s Cheng Featured in CCTV Segment on China-US Anti-Corruption Crackdown

October 1, 2015

O’Melveny’s Cheng Quoted in the Wall Street Journal on China’s Anti-Corruption Campaign

August 18, 2015

Ronald Cheng’s Return to O’Melveny Detailed in Global Investigations Review

June 4, 2015

Alerts and Publications

Press Releases