Istmo de Tehuantepec | |
|---|---|
Region | |
 Oaxaca regions - Istmo de Tehuantepec to the east | |
| Coordinates: 16°10′57″N 95°11′45″W / 16.18250°N 95.19583°W | |
| Country | Mexico |
| State | Oaxaca |
| Area | |
| • Total | 19,977 km2 (7,713 sq mi) |
Istmo de Tehuantepec is the largest region of the state of Oaxaca, located in southwestern Mexico.