| Chaclacayo District | |
| Native Name: | Distrito de Chaclacayo (Spanish) |
| Native Name Lang: | es |
| Settlement Type: | District |
| Mapsize: | frameless |
| Coordinates: | -11.9833°N -122°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Peru |
| Subdivision Type1: | Region |
| Subdivision Name1: | Lima |
| Subdivision Type2: | Province |
| Subdivision Name2: | Lima |
| Parts Type: | Subdivisions |
| Parts Style: | para |
| P1: | 1 populated center |
| Established Title: | Founded |
| Established Date: | April 24, 1940 |
| Seat Type: | Capital |
| Seat: | Chaclacayo |
| Leader Title: | Mayor |
| Leader Name: | Sergio Baigorria (2023–2026) |
| Unit Pref: | Metric |
| Area Total Km2: | 39.5 |
| Elevation M: | 647 |
| Population Footnotes: | [1] |
| Population As Of: | 2023 |
| Population Density Km2: | auto |
| Timezone1: | PET |
| Utc Offset1: | -5 |
| Blank Name Sec1: | UBIGEO |
| Blank Info Sec1: | 150107 |
| Website: | munichaclacayo.gob.pe |
Chaclacayo is a district of the Lima Province in Peru. Together with Chosica, Chaclacayo is the natural exit district to Central Peru, east of Lima, through the Carretera Central (Central Highway).
Chaclacayo is located at an elevation of 647 m and at the 17th km mark of the Carretera Central, the main road headed East starting in the Lima urban center.Borders:North: Rimac River and Lurigancho (Chosica)South: CieneguillaWest: AteEast: Lurigancho (Chosica)
During the colonial era (17th-18th centuries), the corregimiento De la Buena Muerte executed its functions from Chaclacayo. It was then that began the formation of the nine estates that, with the passing of time, would originate the district.
Chaclacayo is located in the valley of the Rímac River that runs from the Peruvian Andes to the Pacific Ocean. Its weather is typical of the Coastal Andes: During summertime (from December to February) it is warm and sometimes rainy; the rest of the year it is usually sunny, with average temperatures between 14 and 20 °C. The coldest months are June and July, when temperatures can drop to 12 °C.
The name is derived from an Aymara word that means "at the foot of the carrizo". Carrizo is a plant that grows by the Rimac's riverside.
Places to visit in Chaclacayo are the Parque Central, the central park of the district. Around the park there are other landmarks: a well-known bakery, an Evangelical church, a bazaar, and the Chaclacayo District Council.
The peculiar shape of the district has made some think of Huampaní and Ñaña as being part of Chaclacayo. However those towns after the bridge do, but before the bridge belong to the neighboring district of Lurigancho.