Kovilj (Serbian Cyrillic: Ковиљ) is a suburban settlement of the city of Novi Sad, Serbia.

Donji(lower) Kovilj developed with the monastery and existed even before the Great Migrations and arrival of Arsenije III Čarnojević 1650.

The inhabitants lived on fishing, hunting, wood cutting by marshes and military service.

These Serbs were the only soldiers who belonged to the "Šajkaška battalion" as crews scurry wooden boats who fought on the Danube, Sava and Tisa preventing attacks against the Turks.

It is a complex of marshes and forest ecosystems (4,840 ha) with numerous biocoenoses integrated into a functional whole.

[2] The core values of this area are represented by the preserved and diverse indigenous orographic and hydrographic forms of marshes (islands, backwaters, ponds, swamps); the preserved, abundant indigenous plant communities in marshes (forests, meadows, reeds, rushes); the diversity and abundance of fauna (172 species of birds and 46 species of fish) and particularly by the presence of rare and endangered species.