Tapachula de Córdova y Ordóñez, simply known as Tapachula, is a city and municipality located in the far southeast of the state of Chiapas, México, near the Guatemalan border and the Pacific Ocean. Economically, it is one of the most important cities in Chiapas; as capital of the agriculturally-rich Soconusco region, Tapachula also serves as a key port for trade between México and Central America. The area was originally inhabited by the Mam, as a region under the control of the Mam state of Xelaju, but was first established as a city by the Aztecs in the 13th century. Most of its economic importance has come since the late 19th century, with the establishment of coffee plantations. This practice initiated a steady stream of migration and immigration into the area, which continues to this day, and has left the city with a significant Asian and German cultural presence. There is a large Mayan and Nahua population.

Chiapas is a state in Southwest Mexico. According to the 2020 Mexican census, it has the eighth largest population of all states with 5,543,828 inhabitants and the 10th largest by land area spanning 73,560.47 square kilometres (28,401.86 sq mi). Chiapas is officially divided into 124 municipalities, although the establishment of municipal authorities in Belisario Domínguez was suspended in 2015 pending the resolution of a territorial dispute between Chiapas and the neighbouring state of Oaxaca. In 2021, the Mexican Supreme Court resolved this dispute in Oaxaca's favour, and annulled the 2011 decree that had created Belisario Domínguez.