Tatiana Clouthier Carillo (born August 12, 1964, Culiacan, Sinaloa[2][3]) is a Mexican educator, politician and writer.

From December 8, 2020 to October 6, 2022, she served as the head of the Secretariat of Economy of Mexico appointed by President Andrés Manuel López Obrador.

[4] Clouthier came to national attention in Mexico as the 2018 presidential campaign manager for President Andrés Manuel López Obrador.

[9] She studied a Bachelors degree in English Language at the Monterrey Institute of Technology and Higher Education as well as her masters in public administration at the Universidad Autónoma de Nuevo León.

[9] Although Clouthier grew up in Sinaloa, she has spent most of her life in Nuevo León, currently a resident of San Pedro Garza García.

[10] From 1982 to 1994 she taught English, Mexican history and socioeconomics in schools such as Monterrey Tech and the Centro Universitario México.

[3][10] Between 1989 and 1997 she held various administrative positions with the San Pedro Garza García municipality such as direction of human affairs, assistant to the secretary of primary services and the director of tourism, education and sports.

[5] Clouthier's main success has been managing the candidate's and campaign's online presence, especially in social media and particularly in a Twitter account called Abre Más Los Ojos (Open Your Eyes Wider).

She directs a team responsible for social media messaging, focused on pushing the campaign's narrative and defending against attacks by other candidates.

The scandals was dubbed in the press “Pejenomics” after the candidate's nickname[16] Another problem on Twitter occurred when she appeared in a photo with a Rolex watch.

[6][5][13][15] Clouthier's work succeeded in bringing many young people to the campaign, and her popularity is such that other candidates have reminded voters that López Obrador is running for president and not her.

[4] In 2021, Clouthier commissioned Rodney Frelinghuysen, a former member of the United States House of Representatives, to lobby on behalf of the Secretary of Economy's interests in Washington.