Our Expertise 

Delphine Constantin is the founder and Principal of D Sy Law.

She has more than 20 years of experience in emerging market jurisdictions - principally in South East Asia and South Asia.  


Her practice focuses on: Cross-Border Investments, Projects (Infrastructure & Energy), Risk Management & Pre-Litigation Strategy, Compliance, Regulatory Matters  & Investigations, and International Disputes (Arbitration & Litigation).

She acts for sponsors, developers, operators, investors and financiers, multilaterals, public-sector agencies, senior executives and entrepreneurs.

She has extensive direct experience of working in Australia, Vietnam, the Philippines, India and Singapore - where she was previously based and worked for international law firms, a regional multilateral and a leading Indian law firm in Mumbai.

Delphine Constantin is dually-qualified and practices under both Common Law and Civil Law jurisdictions. She has developed specific expertise advising on the expanding Asia-Africa investments (including with the Civil Law jurisdictions of North Africa and French- and Portuguese-speaking Africa).



  • MBA, University of Chicago Booth School of Business (USA)(with concentrations in International Business, Finance, Accounting, & Economics )


  • Magistère de droit des activités économiques (MDAE)(Master in Law), Université Paris I (Panthéon- Sorbonne)(France)

  • LL.B., McGill University (Canada)



  • Solicitor (England & Wales)

  • Paris Bar (France)(inactive)