Mariana Tejado Gallegos is a distinguished Mexican environmental attorney with a PhD from the Institute of Legal Research at the National Autonomous University of Mexico (UNAM). Currently, she leads the Mexican environmental practice at BALL PLLC, based in Austin, Texas. She is also certified as a Foreign Legal Consultant by the Supreme Court of Texas. With a multifaceted career that bridges both the private and public sectors, Mariana’s expertise spans arbitration, environmental law, natural resources and human rights. Her comprehensive understanding of Mexican legal frameworks enables her to assist both Mexican and international clients in navigating regulatory risks and ensuring compliance with environmental and social standards. Between 2021 and 2024, because of significant legal reforms in Mexico, Mariana played a key role in preparing environmental expert reports for lawsuits filed by national and international companies challenging these reforms, which were seen as contrary to international legal instruments. Mariana’s career includes notable roles such as Director of Environmental Affairs at the Mexican Human Rights Commission, where she addressed critical issues at the intersection of human rights and environmental protection. She has also served as an advisor to prominent organizations, including the United Nations Economic Commission for Latin America and the Caribbean, the Commission for Environmental Cooperation of North America, and the Inter-American Development Bank. A recognized thought leader in her field, Mariana has authored several influential works, including ’Handbook of Mexican Environmental Regulation’ (2021), ’Soil Pollution by Hazardous Wastes and Their Regulation in Mexico’ (2014), and ’Fracking and its Mexican Regulation: Its Social and Environmental Impacts’ (2022), all published by IIJ-UNAM. She is an active member of the Illustrious and National Bar Association of Mexico, the International Network on Climate Change, Energy and Human Rights, and the World League of Environmental Lawyers. In recognition of her expertise, Mariana was accredited as an environmental legal expert by the Federal Judicial Council in both 2017 and 2018.
Mariana Tejado Gallegos is a distinguished Mexican environmental attorney with a PhD from the Institute of Legal Research at the National Autonomous University of Mexico (UNAM). Currently, she leads the Mexican environmental practice at BALL PLLC, based in Austin, Texas. She is also certified as a Foreign Legal Consultant by the Supreme Court of Texas. With a multifaceted career that bridges both the private and public sectors, Mariana’s expertise spans arbitration, environmental law, natural resources and human rights. Her comprehensive understanding of Mexican legal frameworks enables her to...
