| San Marcos | |
| Native Name Lang: | es |
| Settlement Type: | District |
| Mapsize: | frameless |
| Subdivision Type: | Country |
| Subdivision Name: |  Peru |
| Subdivision Type1: | Region |
| Subdivision Name1: | Ancash |
| Subdivision Type2: | Province |
| Subdivision Name2: | Huari |
| Parts Type: | Subdivisions |
| Parts Style: | para |
| Established Title: | Founded |
| Seat Type: | Capital |
| Seat: | San Marcos |
| Leader Title: | Mayor |
| Leader Name: | Christian John Palacios Laguna |
| Unit Pref: | Metric |
| Area Total Km2: | 556.75 |
| Elevation M: | 2964 |
| Population Total: | 17033 |
| Population As Of: | 2017 |
| Population Density Km2: | auto |
| Timezone1: | PET |
| Utc Offset1: | -5 |
| Blank Name Sec1: | UBIGEO |
| Blank Info Sec1: | 021014 |
San Marcos District is one of sixteen districts of the Huari Province in Peru.[1]
One of the highest peaks of the district is Pukarahu at approximately 5000m (16,000feet). Other mountains are listed below:[2]
The people in the district are mainly indigenous citizens of Quechua descent. Quechua is the language which the majority of the population (72.16%) learnt to speak in childhood, 27.31% of the residents started speaking using the Spanish language (2007 Peru Census).[3] According to the Foreign Trade Society of Peru (Comex), the district had one of the highest incomes in Peru as of 2023 due to mining and governmental contracts, though its citizens live in poor conditions due to the mismanagement of funds.[4] The majority of citizens do not have access to sewer drainage, nearly 15% of children suffer from malnutrition and 90% of roads are unpaved.