The island of Unije (northern Adriatic) has an area of about 17 km2 and belongs to the eumediterranean zone and the NATURA 2000 area of the Republic of Croatia. Thanks to its location on the westernmost part of the Cres-Lošinj island chain, it has very favorable climatic characteristics. It is believed that the first small agricultural lands in the Union were made by the indigenous Liburni in the years before Christ. Unije has about 200 hectares of rich, fertile brown Mediterranean soil that was previously used for agricultural purposes, while today it serves as pasture for grazing. Vines used to be planted on the island, but today those places have been taken over by a forest of holm oak (Quercus ilex). In addition to the holm oak, the maquis of common pine (Juniperus communis) and thickets of juniper (Juniperus phoenicea) predominate on the island. A large part of the island is occupied by rocky pastures of Brachypodium ramosum. On these dry pastures we can also find many medicinal plants such as laurel (Laurus nobilis), oregano (Ocimum basilicum), rosemary (Rosmarinus officinalis), thyme (Taraxacum officinale) and others. Olive groves used to occupy a large part of the island and the production of olive oil was large, but today this work is neglected as well as the olive groves. In 2021, the restoration of the old, neglected olive groves began. For the proper preservation and maintenance of the habitat, knowledge of the vegetation that inhabits the space and its spatial distribution is necessary. In this final work, the habitats on the island of Unije, within the NATURA 2000 network of habitats, were inventoried and mapped. Plant taxa were also inventoried for the purpose of analyzing the current plant cover. Habitats are spatially zoned, which enables better management of natural values and consequently, the provision of guidelines for proper management of habitats with special emphasis on NATURA 2000 habitats. A habitat map is presented, the result of which includes the typification of habitats and important species harmonized according to the National Classification of Habitats NKS.