Irmak Nature Park (Turkish: Irmak Tabiat Parkı) is a nature park located in Sarıyer district of Istanbul Province, Turkey.

[1][2] The nature park offers outdoor recreation activities such as hiking, cycling and picnicing for visitors on daily basis.

[1] Vegetation of the nature park is dense wood of deciduous trees comprising sessile oak (Quercus petraea), Kasnak oak (Quercus vulcanica), hornbeam (Carpinus betulus), European alder (Alnus glutinosa), sweet chestnut (Castanea sativa), blackthorn (Prunus spinosa), laurestine (Viburnum tinus), common ivy (Hedera helix), butcher's-broom (Ruscus aculeatus) and blackberry (Rubus).

[1] Animals mainly observed in the Belgrad Forest are wild boar, golden jackal, deer, roe deer, fox, gray wolf, marten, hare, squirrel, porcupine, wood mouse, the reptile tortoise and the bird species buzzard, hawk, magpie, crow, woodpecker, passer, finch and goldfinch.

[1] This geographical article about a location in Istanbul Province, Turkey is a stub.