André de Sousa Vieira


André de Sousa Vieira joined the firm in 2020 as a partner. He is co-responsible for a banking and financial team, integrating the International Committee of Morais Leitão. He is now head of office in Singapore.

He is a finance lawyer admitted in England & Wales, Portugal and Spain, having integrated Clifford Chance LLP in its London office between 2010 and 2020, where he was a member of the Worldwide Projects Group (Energy & Infrastructure) and of the Africa Group, having also assumed the position of co-head for Clifford Chance Portuguese and Lusophone Africa's practice and strategy, being also the London point of contact for the LatAm market, in close collaboration with the New York, Washington and São Paulo offices. On a secondment basis, he held positions at Telefónica S.A (Madrid) and Espírito Santo Investment Bank (Lisbon). He began his career as a lawyer in Barcelona, Spain.

André de Sousa Vieira has dedicated special attention to the Lusophone markets, with strong connections to the main international financial markets. He is particularly recognized for advising international project finance transactions in the energy, natural resources and infrastructure sectors, having represented lenders (DFIs, ECAs and commercial banks), sponsors and governments.

He holds a PhD in International Finance Law from the University of Barcelona, and his thesis was awarded a Ph.D. Excellence Award. He has a degree in Law from the Portuguese Catholic University. He also holds an LL.M. from the Pompeu Fabra University Law School (Barcelona, Spain), a post-graduation in ESADE Business & Law School (Barcelona, Spain) and an M.Sc. in Financial Economics from the School of Economics of the University of Barcelona.

Over the years, André de Sousa Vieira has been a guest lecturer and researcher at various institutions, including the Catholic Faculty of Law - Lisbon School, the Agostinho Neto University Faculty of Law (Luanda, Angola), the Barcelona University School of Law (Barcelona, Spain) and the Harvard Law School (Cambridge, Massachusetts, USA).

"very good practitioner"

Chambers Global

Law Degree, Catholic University of Lisbon Law School, post-graduation in Business Law at ESADE Business & Law School, LL.M. at Pompeu Fabra University Law School, M.Sc. in Financial Economics, Barcelona University Economics School. Visiting Researcher (prae-doc) at Harvard Law School. PhD in International Financial Law at the University of Barcelona.


Portuguese, English and Spanish.


Portuguese Bar Association. Law Society of England and Wales. Spanish Bar Association. Royal European Academy of Doctors. Bretton Woods Committee.

André de Sousa Vieira