| Valley Union High School | |
| Schooltype: | Public high school |
| Grades: | 9-12 |
| Superintendent: | Kyle Hart |
| Principal: | Richard Anderson |
| Address: | 4088 E. Jefferson Rd |
| City: | Elfrida, Arizona |
| Zipcode: | 85610 |
| Country: | USA |
| Ceeb: | 030095 |
| District: | Valley Union High School District |
| Enrollment: | 114 (2021–22)[1] |
| Mascot: | Blue Devil |
| Teaching Staff: | 13.86 (FTE) |
| Ratio: | 8.01 |
| Colors: | Blue and white |
Valley Union High School is a high school in Elfrida, Arizona. It is the only school in the Valley Union High School District.