Alicia Isabel Adriana Bárcena Ibarra (born 5 March 1952) is a Mexican biologist and the current Secretary of Environment and Natural Resources of Mexico.

The Earth Council is a non-governmental organization in charge of the follow-up of the agreements reached in the United Nations Conference on Environment and Development (UNCED) held in Rio de Janeiro, Brazil, in 1992.

Within the realm of academia, Bárcena was the Director of the South-East Regional Centre of the Instituto Nacional de Investigaciones sobre Recursos Bióticos in the state of Yucatán, working closely with the Mayan communities.

[3] In 2008, Ban announced Bárcena's appointment as Executive Secretary of the Economic Commission for Latin America and the Caribbean (ECLAC); she replaced José Luis Machinea.

[4] From 2014 until 2015, Bárcena served on the Secretary-General's Independent Expert Advisory Group on the Data Revolution for Sustainable Development, co-chaired by Enrico Giovannini and Robin Li.

[8] Later that month, President Andrés Manuel López Obrador announced his plans to nominate Bárcena to succeed Mauricio Claver-Carone as head of the Inter-American Development Bank (IDB).