Sierra del Divisor
{{Infobox mountain range
| name = Sierra del Divisor
| photo =
| photo_caption =
| elevation_m =
| elevation_ref =
| prominence =
| map = Peru
| range =
| coordinates = {{coord|7.963023|S|73.782124|W}}
| coordinates_ref=
| topo =
| type =
| age =
| last_eruption =
| first_ascent =
| easiest_route =
}}
Sierra del Divisor is a mountain range located in the border between Peru and Brazil,{{cite book|author=Adm. IBGE|title=Diagnóstico geoambiental e sócio-econômico: Trecho Rio Branco-Cruzeiro do Sul|publisher=IBGE|year=1994|page=144|id=}}{{cite book|last=Leonardi |first=Victor |title=Fronteiras amazônicas do Brasil: saúde e história social|publisher=Marco Zero|year=2000|page=181|id={{ISBN|852790313X}}}} rising up from the Amazonian plain. It is the only mountainous area in the lower Amazonian jungle.{{Cite web |title=Sierra del Divisor {{!}} Huge Amazon National Park {{!}} Pucallpa, Ucayali & Loreto {{!}} Indigenous Peoples |url=https://www.perunorth.com/sierra-del-divisor |access-date=2023-03-24 |website=Northern Peru & Amazonia Tours {{!}} Kuelap & Gocta {{!}} Amazon River Cruises & Lodges |language=en-US}} The best-known feature of the range is a pyramid-like mountain called El Cono, which in clear weather is visible from the Andes far to the west.{{cite news|last=Hill|first=David|date=July 29, 2015|title=Peru stalling new national park for unique Amazon mountain range|newspaper=The Guardian|url=https://www.theguardian.com/environment/andes-to-the-amazon/2015/jul/29/peru-stalling-new-national-park-unique-amazon-mountain-range}}
On November 8, 2015, the Peruvian government announced it had designated 3.3 million acres of rainforest in the mountain range as a national park.{{cite web |title=Peruvian Rainforest 22 Times the Size of Chicago Named a National Park with Help from Field Museum |url=https://www.fieldmuseum.org/about/press/peruvian-rainforest-22-times-size-chicago-named-national-park-help-field-museum |publisher=Field Museum of Natural History |date=10 November 2015}}