The Papaloapan River is one of the main rivers of the Mexican state of Veracruz. Its name comes from the Nahuatl papaloapan meaning "river of the butterflies".

Veracruz, formally Veracruz de Ignacio de la Llave, officially the Estado Libre y Soberano de Veracruz de Ignacio de la Llave, is one of the 31 states which, along with Mexico City, comprise the 32 Federal Entities of Mexico. Located in eastern Mexico, Veracruz is bordered by seven states, which are Tamaulipas, San Luis Potosí, Hidalgo, Puebla, Oaxaca, Chiapas, and Tabasco. Veracruz is divided into 212 municipalities, and its capital city is Xalapa-Enríquez.