Home - Sion Advogados

legal solutions for capital-intensive and infrastructure projects

We provide services with high efficiency, technical competence and specialization.

We are a law firm that is proud to be recognized as a benchmark in Brazil and beyond. This reputation comes from our commitment to being there for those who trust our work, offering not only legal solutions, but also security and peace of mind for our clients at important moments.

More than providing legal services, our mission is to create tailor-made solutions, even for the most complex challenges. We combine technical knowledge, experience and empathy to understand each situation in depth and deliver results that make a difference.

Meet the office

Expertise in highly complex cases and recognition in the national and international market: WE ARE BRAZIL’S FIRST PLACE IN ENVIRONMENTAL AND ENERGY AND LATIN AMERICA’S FIRST PLACE IN MINING

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Main recognitions

Since its foundation, Sion Advogados has been positively recognized by the market and the legal community in general. These results are the fruit of a professional and specialized approach, which can be seen in the various awards and certifications obtained in the different sectors in which the firm provides services.

Practice areas

Sion Advogados offers differentiated legal solutions, supported by the unique know-how of its professionals and significant experience in supporting large projects involving infrastructure works or capital-intensive investments.

practices

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In the media

27/08/2026

Promoting Women Lawyers 2026

In its second consecutive year of participation in the *Promove Mulheres Advogadas* initiative, Sion Advogados celebrates achieving the Gold Seal, awarded by OAB-MG in recog... [...]

26/08/2026

Sion Advogados is a finalist for the Brazil’s Leading Lawyers Awards 2026.

Once again, Sion Advogados is among the finalists for the Brazil’s Leading Lawyers Awards – BRALLAW 2026. In this edition, the firm is competing for Environmental Law Firm o... [...]

19/08/2026

Supreme Court removes trial regarding LGLA from the agenda

The Supreme Federal Court has removed Direct Actions of Unconstitutionality (ADIs) 7.913, 7.916, and 7.919, as well as Declaratory Action of Constitutionality (ADC) 102, from today... [...]