| HaSharon Subdistrict | |
| Native Name: | נפת השרון قضاء هشارون |
| Mapsize: | 150px |
| Subdivision Type: | Country |
| Subdivision Name: |  Israel |
| Subdivision Type1: | District |
| Subdivision Name1: | Central |
| Area Total Km2: | 348 |
| Population Total: | 460500 |
| Population As Of: | 2016 |
| Population Footnotes: | [1] |
| Demographics Type1: | Ethnicity |
| Demographics1 Title1: | Jews and others |
| Demographics1 Info1: | 79.2% |
| Demographics1 Title2: | Arabs |
| Demographics1 Info2: | 20.8% |
| Type: | Subdistrict |
The HaSharon Subdistrict is one of Israel's subdistricts in the Central District. The principal city of this subdistrict is Netanya. The subdistrict is situated in the Sharon plain, a section of Israel's coastal plain, from which it draws its name.
The subdistrict is mostly composed of what had been, during British-ruled Mandatory Palestine, the Tulkarm Subdistrict. The rest of Mandatory Tulkarm Subdistrict east of the Green Line constitutes the current Tulkarm Governorate.