| Address: | 4532 Weber Road Saint Louis, MO 63123 |
| Coordinates: | 38.5520, -90.3014 |
| District: | Bayless Consolidated School District |
| Teaching Staff: | 29.04 |
| Ratio: | 19.49 |
| Enrollment: | 566 |
| Enrollment As Of: | 2022–23 |
| Campus Type: | Suburban |
| Colors: | Green and Gold |
| Athletics Conference: | South Central Athletic Association |
| Nickname: | Bronchos |
Bayless Senior High School is a public school located in unincorporated south St. Louis County, Missouri.