ONG Siew Ling, Debbie

Associate Professor

LL.M. (Cambridge), LL.B. (NUS), Advocate & Solicitor (Singapore)

  • Judicial Commissioner, Supreme Court of Singapore
  • Member, International Advisory Board of the Child & Family Law Quarterly Journal
  • Member, Review Board constituted under the Children and Young Persons Act (formerly)
  • Professorial Fellow, Singapore Institute of Legal Education (formerly)
  • Resource Consultant, Family Law Practice Committee, Law Society of Singapore (formerly)
  • Chairperson, Centre Governance Committee, Tampines Family Service Centre (formerly)
  • Advisory Board Member, Marriage Central, MCYS (formerly)
  • Senior Student Advisor, NUS Law Faculty (formerly)
Email Address:
Office Tel:  
Office Fax: (65) 6779-0979 
Office Address

Faculty of Law, National University of Singapore
Eu Tong Sen Building
469G Bukit Timah Road
Singapore 259776
Research Interests

Conflict of laws in Family issues
Family law
Tort law

Subjects Taught

Family Law
Law & Sociology of the Family
Conflict of laws in family issues
Law of Torts

Brief Biodata

Debbie has taught Family Law, Law & Sociology of the Family, Conflict of Laws in Family issues and the Law of Torts at the NUS Law Faculty. She publishes mainly in the area of Family Law. She has previously served as a Court Mediator in the Family Court for a decade and has assisted the Court of Appeal and High Court as amicus curiae in child proceedings. She has formerly served on the Law Society's Family Law Practice Committee and is a member of the International Advisory Board of the Child & Family Law Quarterly Journal. Debbie enjoys being involved in projects which further the development of a good family justice system. Believing in the need for community support for families in Singapore, she has also been Chairperson of the Centre Governance Board of the Tampines Family Service Centre for a number of years, a member of the Advisory Board of 'Marriage Central' as well as a member of the Review Board constituted under the Children and Young Persons Act. She is presently on leave of absence from NUS and serving as a Judicial Commissioner of the Supreme Court of Singapore.

Representative Publications

1. Debbie Ong, International Issues in Family Law in Singapore (2015, Academy Publishing, Singapore).

2. Debbie Ong, "Prenuptial Agreements: Affirming TQ v TR in Singapore", [2012] 24 Singapore Academy of Law Journal, 402-432 (Singapore).

3. Debbie Ong, "The quest for optimal state intervention in parenting children: navigating within the thick grey line". Singapore Journal of Legal Studies, (2011): 61-88. (Singapore, A Special Issue to commemorate the 50th year of the Women's Charter of Singapore).

4. "Parental Child Abduction in Singapore: The Experience of a Non-Convention Country", [2007] 21 International Journal of Law, Policy and the Family 220

5. "The test of sex for marriage in Singapore" (1998) 12 International Journal of Law, Policy and Family 161

6. "Financial Relief in Singapore After a Foreign Divorce" [1993] Singapore Journal of Legal Studies 431

Publication List