Omo Forest Reserve is a preserved area of tropical rainforest in Ogun state, in the south-western part of Nigeria.

The terrain is largely flat and well-drained, with some low rolling hills, and forms part of the Omo River watershed.

[1] The omo forest reserve was established in 1925 and covers about 130,500 hectares.which was constituted during the British colonial era.it was initially set-up for conservation of timber resources for commercial exploitation.afterwards the reserve focus shifted towards conservation of biodiversity and protection of endangered species.which made the area ecological value becomes more important and widely recognized.

[3] This forest reserve consists of a large area of tropical rainforest covering 130,500 hectares (322,000 acres).

[1] Over two hundred species of tree have been recorded in the reserve,[4] the most common trees being Diospyros spp., Drypetes spp., Strombosia pustulata, Rinorea dentata and Voacanga africana, and the most common plant families include Araceae, Asteraceae, Ebenaceae, Faboideae, Liliaceae, Poaceae, Rubiaceae and Violaceae.