The revaluation is a macroeconomic phenomenon that depends on multiple variables, including their causes include increasing exports, mainly oil, increased remittances, privatization of state entities, increased foreign investment by improving economic and internal security, fiscal deficits and money laundering among others and currently presented in the reality of the Colombian economy. Exports of tuna companies that use the port of Cartagena de India’s as most exporters have been hit hard because of the existing revaluation in the country, leading to a considerable reduction in the percentage of annual exports up 40% from 2008 to 2010. As important and powerful the objective of this study was to analyze the impact of the revaluation of the Colombian peso on export companies Tuna Cartagena de India’s. The research used was descriptive, since the movement of the exchange rate in Colombia and the impact on tuna exporters using the port city of Cartagena de India’s in 2008-2012 described; a sample was used and leaned in performance tables and graphs that provide a broad view of this phenomenon. Among the results, it was found that Colombia in 2008-2012 provided a phenomenon of revaluation, where exporters, among them the Tuna, voiced their complaints with shrinking margins and sometimes operate at loss with consequent dismissal of staff (and their effect on the unemployment rate), debt restructuring and for working capital, the government subsidy request I rate differential change or close.