Martínez de Hoz & Rueda is ‘intimately familiar’ with Argentina’s oil and gas regulatory landscape and assists companies such as Pan American Energy Group and Delta Patagonia with transactional and litigation matters. The practice provides support with the acquisition of large offshore and onshore gas-producing fields, as well as the financing and construction of LNG facilities and pipeline projects. The team also assists with the sale of crude oil-producing assets and the granting of concession rights. Additionally, the firm advises clients on obtaining hydrocarbon exploration permits and defends them in collective actions initiated by NGOs and local municipalities seeking to block these projects. The practice is led by José Alfredo Martínez De Hoz, who played a key role in developing Argentina’s domestic and export gas markets during the country’s privatisation and deregulation; Pablo Rueda, who assists producers, transporters, and distributors of hydrocarbons; and Tomás Lanardonne, who specialises in upstream, midstream, and downstream projects. Among the second-line of younger partners, Marcos Blanco is effective in tender processes and contract negotiations, while Juan Cruz Azzarri brings substantial arbitration and litigation experience in the oil and gas sector to the practice. Jimena Vega Olmos left the firm in July 2025.

Bomchil’s ‘unique balance of technical knowledge and practical expertise’ is an asset for companies undertaking major oil and gas projects, including pipeline expansions, landfill developments, and other infrastructure and investment initiatives linked to the Vaca Muerta shale region. The team supports clients across all stages, from setting up joint ventures and acquiring oil and gas companies to managing day-to-day operational, regulatory, and contractual matters. It also provides guidance on complex cross-border issues, such as the impact of foreign exchange controls on exports and international financing. The practice is led by Pablo Alliani, who advises independent and state-owned oil and gas companies on contractual and regulatory matters. He is joined by the ‘proactive’ Fernando Brunelli, who focuses on farm-in agreements and bidding rounds, and banking specialist Fermín Caride, who counsels energy clients on financing and M&A deals. The ‘excellent’ Cristian Galansky handles upstream and downstream matters, as well as disputes, while public law and economic regulation expert María Inés Corrá is also active in sector-specific conflicts.

With ‘one of the strongest practices in the market’, Bruchou & Funes de Rioja stands out for its involvement in some of Argentina’s largest and most complex oil and gas sector deals. The team covers a broad range of projects, from developing midstream infrastructure to LNG export facilities, and assists clients with structuring joint ventures, securing financing, negotiating agreements, and ensuring compliance with regulatory requirements. The team is also equipped to provide tax advice and help clients navigate and benefit from Argentina’s large investments incentive regime. Practice head Javier Rodríguez Galli is ‘knowledgeable’ on international legal frameworks, such as the Paris Agreement, which apply to oil and gas companies. He is supported by the ‘outstanding’ Nicolás Dulce, who is skilled in structuring midstream and export-related projects, and Santiago Balbi, who focuses on industry-specific acquisitions and joint ventures.

Marval O’Farrell Mairal is frequently sought after for counsel on transformative energy developments, including Argentina’s first floating LNG facility, the expansion of natural gas processing plants, and cross-border infrastructure projects involving the reversal of gas pipeline flows. The practice is also active in upstream transactions, such as the sale of mature oil and gas fields, and regularly advises on offshore projects, from seismic surveying to the installation of production platforms in the South Atlantic. The team’s advice spans all regulatory, contractual, tax, permitting, and environmental issues across the life cycle of its clients’ projects. Oil and gas practice head Francisco Macías leads on major LNG infrastructure projects, while of counsel Arturo Pera is an industry veteran who brings decades of experience to the ‘responsive and engaged’ team. Soledad Riera is highly experienced across upstream, midstream, and downstream regulatory frameworks, while Agustina Ranieri focuses her practice on corporate and M&A and commercial arbitrations within the oil and gas sector.

Baker McKenzie‘s oil and gas practice offers a ‘wealth of experience’ across upstream and midstream activities. This includes assisting companies with securing offshore seismic survey permits in key basins such as the Austral Marine, Malvinas Marine, and Shallow Waters Area. The team also facilitates investments in companies that enable the conversion of natural gas to LNG and the acquisition of oil and gas blocks. The firm also provides ongoing advisory services for day-to-day operational matters, including labour disputes, real estate issues, and corporate governance within the oil and gas sector. The practice is headed by Adolfo Durañona and Roberto Grané, who ‘stand out’ for their corporate and regulatory expertise, and Ezequiel Artola, who advises on cross-border M&A deals. Associate Delfina Ferrario handles disputes.

Mitrani Caballero advises local and international clients on complex deals and projects in Argentina’s oil and gas sector. The team handles a broad range of matters, including the sale of exploration permits, the development of natural gas pipelines, and the negotiation of pre-payment agreements for future oil production. Practice head Mariana Ardizzone has an ‘in-depth understanding’ of the structuring of cross-border pipeline and power generation projects. Public law expert Horacio Ruiz Moreno and corporate lawyer María Recondo regularly assist with acquisitions and public and private bids in the oil and gas industry. Banking and corporate specialist Julio Martínez brings financing knowledge to the team. Senior associates Bruno Fiorino and Fiorella Belsito focus on M&A and asset transfers.

Nicholson y Cano Abogados offers ‘in-depth industry knowledge’ of the energy and natural resources sectors, with a particular focus on the oil and gas industry. The department provides counsel on large infrastructure projects and advises companies on regulatory compliance and securing government tax incentives for large-scale investments. The practice also assists clients in divesting significant stakes in exploration companies and helps new market entrants navigate the registration process. The practice is led by Nicolás Perkins, whose specialisms include M&A, IPOs, and project financing, alongside the ‘amazing’ Mariana Guzian, who assists with structuring joint ventures and exploration permit bidding. Additional partner-level expertise is contributed by Alfredo Vítolo, who advises on tenders for privatisations; Marcelo Lamesa, who negotiates joint operating contracts; and Horacio Payá, an environmental expert who defends oil and gas companies involved in remediation lawsuits.

O'Farrell’s oil and gas practice is known for providing crucial advice to domestic and foreign companies on significant legislative and regulatory changes that impact the energy industry. It has been involved in many high-profile deals, such as the acquisition of significant oil and gas reserves, the divestiture of assets, and calls for offshore tenders. The team also advises on the execution of energy distribution agreements and represents clients in complicated arbitration matters related to supply agreements. The practice is led by public law specialist Agustín Siboldi, who focuses on contractual, regulatory, and contentious matters, with honorary partner Uriel F. O'Farrell drawing on his long-standing experience to assist with M&A and privatisation transactions. Additional assets to the team include public lawyers Jorge Muratorio and Ana Belén Micciarelli, who handle disputes between oil and gas companies and the state, with the assistance of senior consultant María Fortuna and senior associate Rebeca Fernández, both experts in public law.

Pérez Alati, Grondona, Benites & Arntsen stands out for its work on important transactions, regulatory matters, and disputes within Argentina’s oil and gas industry. The practice conducts thorough due diligence in relation to the acquisition of concession rights, exploration permits, and stakes in midstream energy projects. The team also advises on the divestment of oil and gas assets and represents clients in local and international litigation and arbitration involving global energy players. Practice heads Francisco Romano and Alan Arntsen excel in negotiating cross-border corporate transactions, including M&A, joint ventures, and financing arrangements. They are joined by counsel Tomás Fernández Madero, who advises on corporate investment agreements within the oil and gas sector.

Pozo Gowland Abogados offers ‘clear recommendations’ and ‘viable solutions’ to oil and gas sector clients, with a focus on regulatory matters and energy projects. The team is skilled in joint venture negotiations, helping clients secure partnerships for large-scale construction projects. It also negotiates contracts for the renovation and modernisation of oil refineries and prepares tender exceptions related to the operation and maintenance of gas plants and facilities. The department is led by administrative expert Héctor Pozo Gowland and dispute resolution co-head Ramón Zubiaurre, who both advise on regulatory, litigation, and arbitration matters in the oil and gas industry. Public lawyers Santiago Durigón and Francisco Pozo Gowland, along with corporate and M&A practitioner Gonzalo Torres, participate in public and private tenders.

Abeledo Gottheil Abogados boasts a solid reputation for assisting major oil and gas players, including YPF, Shell, and Hitachi Energy, with both regulatory and contentious issues. The team regularly represents clients in litigation and arbitration involving civil and environmental matters between state-owned and private entities. In addition to its dispute resolution expertise, the firm is highly involved in regulatory matters, providing guidance on the government’s incentive regime for large investments (RIGI). Practice head Hernán Martín Oriolo frequently advises on regulatory issues across the upstream, midstream, and downstream sectors, and negotiates joint operating agreements. Consultants Luis Erize and Nicolás Martín Mordeglia and senior associate Florencia Buczak are all experienced in handling oil and gas-related disputes.