| Ayish Bayou | |
| Source1 Coordinates: | 31.6167°N -100°W |
| Subdivision Type1: | Country |
| Length: | 47miles |
| Mouth Coordinates: | 31.0667°N -99°W |
| Basin Size: | San Augustine County, Jasper County, Texas |
Ayish Bayou is a river in Texas. Ayish Bayou begins about 7miles north of San Augustine in northern San Augustine County. The course of the stream runs southeast for 47miles through the center of the county, before discharging into the Angelina River in northern Jasper County, Texas