explorer and statesman who was president and dictator of Colombia from 1904 to 1909. He attempted to give his nation a strong one-man rule that would attract foreign investment and foster domestic industrialization.

With little formal education, Reyes engaged in commerce with his brothers, and in 1874 they began an extraordinary adventure of exploration and occupation of the unknown area of the Amazon Basin in Colombia. One brother died of fever and another was eaten by cannibals, but Reyes survived in the jungle for 10 years. The prosperous business he had established collapsed in a financial panic, and he returned to civilization a ruined man.

Reyes soon aligned himself with the Conservative military forces of Colombia and was rewarded for his services to the dictator Rafael Núñez (Núñez, Rafael) with various political offices: secretary of the interior, ambassador to France, and delegate to the Pan-American Conference in Mexico (1901–02). Returning to Colombia after an unsuccessful attempt to negotiate compensation from the United States for the loss of Panama, he was elected president in 1904.

Soon after his inauguration Reyes assumed dictatorial powers—dismissing the Congress, jailing some of its members, and appointing his own puppet assembly. He then set about to restore the nation's international credit, increase coffee production, and encourage the building of railroads and public facilities. All in all, he provided an efficient administration. Colombians, however, were growing restive under his dictatorship, and when he tried to conclude a treaty calling for U.S. payment of only $2,500,000 for the loss of Panama, he was forced to resign (1909). After 10 years of travel he returned to Colombia in 1919.