Ficus bernaysii is a lowland rainforest tree in the family Moraceae, native to an area from New Guinea to the Solomon Islands.

The formal description of F. bernaysii is held to be in the periodical Journal of The Asiatic Society of Bengal (Part 2: Natural History) in 1887.

[9] The taxa is a source of food for Dobsonia minor (lesser bare-backed fruit bat) and is parasitized by the wasps Apocrypta meromassa Ulenberg 1985, and Ceratosolenm hooglandi[10][11] Ficus species have a specialised pollination system involving wasps of the Agaonidae family.

The concentration by wasp pollinators on separate species might explain the high rates of speciation in the closely related sections, subgenera and genus of Ficus.

[14] The moths Talanga sexpunctalis complex and Glyphodes margaritaria feed on the tree among other Ficus species, these are both parasitised by the wasp Colastomion masalaii, which frequents F.