Lake Apanás
{{Refimprove|date=September 2015}}
{{Infobox lake
| name = Lake Apanás
| image = Apanaslake.jpg
| caption =
| image_bathymetry =
| caption_bathymetry =
|pushpin_map=Nicaragua
| location = Jinotega, Nicaragua
| coords = {{Coord|13.1944957|N|85.9764282|W|type:waterbody|format=dms|display=inline,title}}
| type = reservoir
| inflow = Tuma River
| outflow = Tuma River
| catchment =
| basin_countries = Nicaragua
| length =
| width =
| area = {{convert|45.90|km2|abbr=on}}
| depth =
| max-depth =
| volume =
| residence_time =
| shore =
| elevation =
| islands =
| cities =
| embedded = {{Designation list
| embed = yes
| designation1 = Ramsar
| designation1_offname = Lago de Apanás-Asturias
| designation1_date = 8 November 2001
| designation1_number = 1137{{Cite web|title=Lago de Apanás-Asturias|website=Ramsar Sites Information Service|url=https://rsis.ramsar.org/ris/1137|accessdate=25 April 2018}}}}
}}
Lake Apanás is a reservoir located in northern Nicaragua and formed by Mancotal Dam on the Tuma River to the north of Jinotega department (border with Honduras). The reservoir has an area of 45.90 square kilometres.{{cite report |url=http://www.inide.gob.ni/Anuarios/Anuario%20Estadistico%202015.pdf |title=Anuario Estadístico 2015 |language=es |page=6 |publisher=INIDE |date=February 2016 |accessdate=1 December 2017}}
It is a source of much of nation's hydropower for the Centro América Power Plant.