Mr Juan Casallas > Holland & Knight > Bogota, Colombia > Lawyer Profile

Holland & Knight
CARRERA 7 #71-21

Work Department


Senior Counsel


Juan Israel Casallas Romero is an attorney in Holland & Knight’s Bogotá office and focuses his practice in public law, arbitration, constitutional and administrative litigation. He has extensive experience in litigation and arbitration involving commercial, constitutional and administrative law, and provides strategic counseling in those fields. Mr. Casallas Romero is well-versed with pre-merger reviews, antitrust proceedings, environmental liability, administrative proceedings and legal aspects regarding the management of community affairs and management of governmental affairs.

Mr. Casallas has wide experience in international and domestic commercial and investment arbitration disputes involving Colombian law issues under the rules of the International Center for the Settlement of Investment Disputes (ICSID) and the International Chamber of Commerce (ICC), focusing on energy, construction and natural resources disputes, involving sensitive international judicial matters of Colombian interest. These matters focus in energy and natural resources concerning disputes across the oil and gas, electricity, infrastructure, construction and mining sectors.

Mr. Casallas Romero has broad experience in contractual and torts and state liability, advising clients regarding legislative inquiries, contract law, competition and consumer law, as well as constitutional and administrative law matters, and works in disputes related with contractual liability and torts with respect to private and public entities, class actions, related to energy and natural resources, competition law, infrastructure, environment, consumer law, public services and constitutional proceedings.

Mr. Casallas was selected by the Law Society of England and Wales, the Bar Council of England and Wales and the Chamber of Legal Services of ANDI to participate in the 2018 Latin American Young Lawyers’ Exchange Programme in London, UK.

In addition, Mr. Casallas Romero has served as a professor of postgraduate courses on environmental liability and prior consultation.


  • English
  • Spanish


  • Asociación Colombiana de Derecho de la Competencia


  • Universidad Externado de Colombia, LL.M., Administrative Law
  • Universidad del Rosario, Specialization, Evidence
  • Universidad Externado de Colombia, J.D.

Lawyer Rankings

Colombia > Public law

(Rising stars)

Juan CasallasHolland & Knight

Colombia > Dispute resolution > Litigation

(Rising stars)

Juan CasallasHolland & Knight

The Bogotá office of Holland & Knight has been far more active in arbitral matters of late, particularly on international cases in conjunction with the firm’s US offices. Nevertheless, the team is accustomed to handling complex commercial, administrative and constitutional litigation, and recent matters include advising a client in the energy and natural resources segment regarding constitutional claims for the protection of fundamental rights (in relation to disputes related to prior consultation processes), as well as  fiscal liability proceedings before the Contraloría General de la República, nullity claims before the Council of State and damage reparation lawsuits, among others. The eight-strong multidisciplinary practice group includes three highly regarded and specialist partners. Increasingly active as an arbitrator, practice head Alberto Zuleta is nevertheless ‘one of the most important trial lawyers in the country‘ and also has expertise in antitrust investigations and unfair competition cases. The practice also has particular strength in energy-sector disputes, particularly those presenting environmental or community aspects, where energy and natural resources head Jose Vicente Zapata brings his expertise to bear. Prestigious corporate and transactional figure, executive partner Enrique Gómez Pinzón is also active in the area, although again, primarily on the arbitral side. The eight-strong group also includes senior counsel Juan Casallas who focuses on public law,  and constitutional and administrative litigation; and associate Estefanny Pardo who undertakes environmental and mining litigation.