| Rio San Bernardino | |
|---|---|
  Location of mouth | |
| Location | |
| Country | United States, Mexico |
| States | Arizona, Sonora |
| Physical characteristics | |
| Mouth | |
• coordinates | 30°48′N 109°11′W / 30.800°N 109.183°W |
| Basin features | |
| River system | Bavispe River |
The Rio San Bernardino, or San Bernardino River, begins in extreme southeastern Cochise County, Arizona, and is a tributary of the Bavispe River, in Sonora, Mexico.[1]