| Hardesty, OK (District) |
| Hardin Community School, OH (PSA) |
| Hardin County, TX (ISD) |
| Hardin County, IL (ISD) |
| Hardin County, TN (ISD) |
| Hardin County, IA (ISD) |
| Hardin County, TN (District) |
| Hardin County, KY (Phantom) |
| Hardin County CUSD 1, IL (District) |
| Hardin County ESC, OH (ISD) |
| Hardin County Schools, KY (District) |
| Hardin Elem, MT (District) |
| Hardin H S, MT (District) |
| Hardin ISD, TX (District) |
| Hardin Northern Local School District, OH (District) |
