César Guillermo Castillo Reyes

César Guillermo Castillo Reyes (: born 17 March 1966) is a Guatemalan attorney and politician who served as the 17th vice president of Guatemala from 2020 to 2024.

Castillo was Deputy Minister of Labor from January 2004 to May 2005. He also served as a member of the board of directors of the Bar Association and Notaries of Guatemala. In 2013, he was appointed executive director of the Chamber of Commerce of Guatemala, leaving office in 2018.

Later, he moved to Guatemala City to continue his studies as a Lawyer and Notary, graduating from San Carlos's Guatemala University in 1998 and later obtaining a master's degree in Human Rights at the Rafael Landívar University.

In 2009, he was elected by the Guatemalan Congress as magistrate of the Court of Appeals of the Contentious in the Judicial Branch and served as such until March 2014. He participated in the union elections of the board of directors of the Bar Association and Notaries of Guatemala of the year 2009 as treasurer within the payroll and exercised in the period from 2009 to 2011.

Castillo swore to the constitution before the president of the congress and took office on January 14, 2020. Before being vice president, he had not been as well-known within the political sphere. Even so, he was known to engage in dialogue with other candidates during the 2019 elections, including Edmond Mulet, presidential candidate for the Humanist Party, and Carlos Raúl Morales, vice-presidential candidate for UNE, and this was understood as a possible guarantee of dialogue on the part of the new government.

In the first days of Alejandro Giammattei's government, he announced the creation of a Center of Government to "better organize the government and comply with presidential priorities." This caused many politicians, deputies, and journalists to comment that it was an institution with the same functions as the vice presidency since the functions were to organize the government cabinet, which Castillo was in charge of, and they assured that it was a form of exclusion within the government.