| Huichihuayan | |
| Settlement Type: | Town |
| Pushpin Map: | Mexico San Luis Potosí#Mexico |
| Pushpin Label Position: | above |
| Pushpin Map Caption: | Location in Mexico |
| Subdivision Type: | Country |
| Subdivision Name: |  Mexico |
| Subdivision Type1: | State |
| Subdivision Name1: | San Luis Potosí |
| Population Total: | 2,157 |
| Coordinates: | 21.4667°N -156°W |
| Postal Code: | 79890 |
| Area Code: | 482 |
Huichihuayan is a town located in the Huehuetlán municipality in the southeast region of San Luis Potosí, Mexico.[1] With a population of over 2,000, it is the largest town in its municipality.[2]