LAWYER PROFILE
Mariana Guzian

Mariana Guzian

Latin America 2026

Chambers ranking badge
Chambers ranking badge

Ranked in 2 practice areas

About

Provided by Nicholson y Cano Abogados

Practice Areas

Corporate M&A, Oil and Gas, Mining, Infraestructure

Career

Profile

Mariana joined Nicholson y Cano in 2013 following the merger with Estudio Cárdenas. Her solid experience in corporate law has made her stand out in the structuring, negotiation, and implementation of both domestic and cross-border investments, including highly complex agreements within the oil and gas industry such as the Loma Campana, Narambuena, and El Orejano projects, as well as the Aleph Midstream JV and the investments of QatarEnergy and Golar LNG in Argentina.

In addition, Mariana has been involved in project financing operations in infrastructure, solar, and wind energy across Latin America. She advises both national and international companies in commercial, corporate, foreign exchange, financial, and international law. Her versatility is reflected in her participation in major transactions in the energy sector. Her practical approach and legal expertise distinguish her in the field of corporate law.

Education

She graduated as a lawyer from the Faculty of Law and Political Sciences at the Pontifical Mariana holds a law degree from the Universidad Católica Argentina and a master’s degree in Finance from UCEMA. She worked at the Holland & Knight offices in the United States from 2015 to 2016. She was recognized by LACCA from 2018 to 2022 in the Energy sector. Mariana is ranked in Chambers in Corporate/M&A and in Energy and Natural Resources: Oil and Gas (Latin America Guides 2021 to 2025). She is also ranked by Legal 500 in Oil and Gas.

Awards

Mariana has been recognized by LACCA in the Energy sector and has been ranked by Chambers & Partners and Legal 500 in the areas of Corporate and M&A, as well as in Energy and Natural Resources, specifically in Oil and Gas.

Chambers Review

Provided by Chambers

Chambers Latin America

Energy & Natural Resources: Oil & Gas - Argentina

Band 2
Band 2

Individual Editorial

Co-head of department Mariana Guzian has significant experience in the energy sector, notably advising clients on operational agreements, offshore bidding rounds and sector-related M&A.

Corporate/M&A - Argentina

Band 3
Band 3

Individual Editorial

Noted partner Mariana Guzian is frequently seen handling commercial transactions and contractual matters for clients in the energy and natural resources and agribusiness industries.

Strengths

Provided by Chambers

  • We have the utmost confidence in Mariana Guzian's timely and targeted advice. Her ability to break down complex legal issues into practical, straightforward advice is highly valued.

    Energy & Natural Resources: Oil & GasChambers Latin America
  • Mariana Guzian is very knowledgeable and effective in negotiations, making her assistance invaluable in every transaction.

    Corporate/M&AChambers Latin America

Ranked Individuals at Nicholson y Cano Abogados (14)

Argentina

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