International Arbitrator

portrait Carmen Nunez-lagos


Núñez-Lagos Arbitration is an arbitration boutique law firm founded by Carmen Núñez-Lagos, an independent arbitrator specialised in commercial and investment arbitration.

After three decades of extensive experience as counsel and arbitrator in international disputes, Carmen created Núñez-Lagos Arbitration to serve as arbitrator in cases which span a variety of sectors and arbitral institutions. Its main focus of expertise regards investment and commercial arbitrations in the fields of energy, construction, telecommunications and sports.

The team at Nunez-Lagos Arbitration is composed of Ana Carolina Simões e Silva, a French-qualified and Brazilian independent lawyer established in Brazil, particularly in cases related to Latin America. For other members, kindly see “Team section”.


Chambers Global (France) 2024 Band 2 and Chambers Europe Band 2, Most in demand arbitrators: 

“Carmen is an excellent arbitrator and has made a name for herself. She is well regarded by all.”

“It was obvious Carmen had a lot of experience and knowledge.

Chambers Global and Chambers Europe 2023, Most in Demand Arbitrators: 

Carmen Núñez-Lagos is brilliant and shows good judgement. She is very thorough and well prepared

Who’s Who Legal Thought Leaders Arbitration 2023

Chambers Global 2022, Most in Demand Arbitrators:

”She is praised for her “very thorough and comprehensive approach to solving issues.”

Who´s Who Legal: Arbitration 2022; Best Lawyers in France 2023

”Recognized as Best Lawyers in France 2022”

Chambers Global 2021 & Chambers Europe 2021: most in demand arbitrators:

She’s got the gravitas and the experience”

She has deep expertise, she is very clear in her oral arguments, very precise

Best Lawyers 2021

”Recognized as Best Lawyers in France 2021”

Chambers Global 2020

”Ranked in Chambers Global 2020, Chambers Europe 2020.”

Chambers Global 2019

“Clients say that Carmen “combines a very practical approach with high technical knowledge.”

Chambers France 2018

Carmen is lauded by sources as ‘very wise and pragmatic, taking the lead in the proceedings with due care and efficiency’.”

Legal 500 Paris 2018

“The ‘pragmatic’ Carmen NúñezLagos has ‘excellent knowledge and interpersonal skills.”

Chambers Global 2017

“She has an excellent command of the law and the facts.” Further impressed sources state: “She turned complicated legal issues into plain language so that people could quickly grasp what actions needed to be taken. Built a rapport with the clients extraordinary well. Spot-on identifying the challenges and weaknesses.”

Chambers Global 2016

“Carmen Núñez-Lagos is well respected by peers in the French market and praised by clients”, who describe her as “an expert who knows her area perfectly. She is very accessible and always tries to simplify matters.”

Global Arbitration 2012

“She is an excellent arbitrator and an inspired advocate.” “Without a doubt, Carmen’s intellectual creativity has made a considerable imprint on arbitral jurisprudence”.