The Migration Information and Statistics System for Mesoamerica (SIEMMES by its Spanish acronym) is a system of migration information designed to capture and monitor the magnitude and characteristics of migratory movements from, to and between the Central American countries and Mexico, by coordinating and compatibilizing the data generated by different agencies in all those countries. 

Set up in 2001, it includes Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua and Panama.