César Augusto Gaviria Trujillo is a Colombian economist and politician who served as the President of Colombia from 1990 to 1994, Secretary General of the Organization of American States from 1994 to 2004 and National Director of the Colombian Liberal Party from 2005 to 2009. During his tenure as president, he summoned the Constituent Assembly of Colombia that enacted the Constitution of 1991.

The Political Constitution of Colombia of 1991, is the Constitution of the Republic of Colombia. It was promulgated in Constitutional Gazette number 114 on Thursday, July 4, 1991, and is also known as the Constitution of Human Rights. It replaced the Political Constitution of 1886 and was issued during the presidency of the liberal César Gaviria, with ideas from the also liberal Luis Carlos Galán.