| Huayllay | |
| Native Name: | Wayllay |
| Native Name Lang: | es |
| Settlement Type: | District |
| Mapsize: | frameless |
| Subdivision Type: | Country |
| Subdivision Name: |  Peru |
| Subdivision Type1: | Region |
| Subdivision Name1: | Pasco |
| Subdivision Type2: | Province |
| Subdivision Name2: | Pasco |
| Parts Type: | Subdivisions |
| Parts Style: | para |
| Established Title: | Founded |
| Seat Type: | Capital |
| Seat: | Huayllay |
| Leader Title: | Mayor |
| Leader Name: | Roman Luis Marcelo Callupe |
| Unit Pref: | Metric |
| Area Total Km2: | 1026.87 |
| Elevation M: | 4310 |
| Population Total: | 9592 |
| Population As Of: | 2005 census |
| Population Density Km2: | auto |
| Timezone1: | PET |
| Utc Offset1: | -5 |
| Blank Name Sec1: | UBIGEO |
| Blank Info Sec1: | 190104 |
| Website: | munihuayllay.gob.pe |
Huayllay District (Quechua Wayllay recreation meadow, lush grove, ichu variety) is one of thirteen districts of the province Pasco in Peru.[1]
Some of the highest mountains of the district are listed below: