Lachuá Lake is a karstic lake in Guatemala. It is located in the middle of a national park covered with tropical rain forest, northwest of Cobán, near the border between the departments of Alta Verapaz and El Quiché. The lake is near circular in shape and is probably a cenote or doline.
In 1976 an area of 145 km² around the lake was designated a national park. Lachuá Lake and its buffer zone were also declared a Ramsar site in 2006.
The park and adjacent buffer zone is noted for its high biodiversity. With 120 species of mammals (50% of mammal species found in Guatemala), 30-40 species of reptiles, 177 bird species (40% of bird species in Guatemala), and 36 fish species.
