| Donegal School District | |
| Location: | Marrietta |
| Streetaddress: | 1051 Koser Road |
| Region: | Mount Joy Anderson Ferry RD. Junior High |
| City: | Mount Joy |
| State: | Pennsylvania |
| County: | Lancaster |
| Zipcode: | 17552 |
| Country: | USA |
| Superintendent: | Mr. Gregory Kiehl |
| Faculty: | 203 |
| Type: | Public |
| Enrolment: | 3013 |
| Grades: | K-12 |
| Mascot: | Indian |
| Colors: | Green and White |
The Donegal School District is a school district covering the Boroughs of Marietta and Mount Joy and East Donegal Township and the southern portion of Mount Joy Township in Lancaster County, Pennsylvania. It is a member of Lancaster-Lebanon Intermediate Unit (IU) 13. The district operates one high school, one junior high school, one intermediate school, and one primary school.