| La Unión District | |
| Native Name Lang: | es |
| Settlement Type: | District |
| Mapsize: | frameless |
| Coordinates: | -5.3222°N -80.8636°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Peru |
| Subdivision Type1: | Region |
| Subdivision Name1: | Piura |
| Subdivision Type2: | Province |
| Subdivision Name2: | Piura |
| Parts Type: | Subdivisions |
| Parts Style: | para |
| Established Title: | Founded |
| Established Date: | December 28, 1927 |
| Seat Type: | Capital |
| Seat: | La Unión |
| Leader Title: | Mayor |
| Leader Name: | Fernando Ipanaque Mendoza (2019–2022) |
| Unit Pref: | Metric |
| Area Total Km2: | 213.16 |
| Elevation M: | 17 |
| Population Total: | 34,540 |
| Population As Of: | 2005 census |
| Population Density Km2: | auto |
| Timezone1: | PET |
| Utc Offset1: | -5 |
| Blank Name Sec1: | UBIGEO |
| Blank Info Sec1: | 200110 |
| Website: | Municipalidad Distrital de La Unión |
La Unión District is one of ten districts of the province Piura in Peru.[1] The district was created by the law Ley N° 5951 of December 28, 1927 during the government of President Augusto Leguía.[2]