Slabinja (Croatian pronunciation: [slābiɲa]; Hungarian: Szlabina; Serbian Cyrillic: Слабиња) is a village in the Sisak-Moslavina County in the central part of Croatia.

[7][8] In the Middle Ages, the area of the village belonged to the Dubica cemetery, while the first known holders of the land were the Babonić family.

In 1334, Slabinja first appears in a written source when its church is mentioned in a list of parishes of the Roman Catholic Diocese of Zagreb.

In October 1483, near the Dubica, the army of Knyaz Bernardin Frankopan defeated the regional Ottoman forces in the Battle of Una.

[11] Estimates of Ottoman casualties range from over 2,000 to 7,000 killed, drowned while fleeing, and imprisoned, together with a large number of freed Christian captives.

[12] After the battle, Berislavić was named as Count of Dubica and Prior of Vrana by King of Hungary and Croatia Vladislaus II.

Under the anti-Ottoman liberation struggle, in 1685, Croatian Ban Nikola III Erdődy issued a command to curtail the Ottoman army to the Una Valley.

The established conditions of power were confirmed by the 1699 Treaty of Karlowitz, thus the border was formally drawn to the Una Valley.

To strengthen the defense forces, the Keglevichs settled a large number of Orthodox Serb families southern from Petrinja and Sunja.

In 1693, Count Ferenc Erdődy of Petrinya appointed Knyaz Petar Draškovich as the governor of "Vlachs" (a term used for a community of mostly Orthodox refugees, mainly Serbs[a]) in Slabinja and other surrounding inhabited places.

For protection from the Ottoman army, the watchtowers were built along the Una River, several of which were located in Slabinja, one stood near the village's church.

[14] They were granted land as a reward for the service in the Great Turkish War and a defense of the Croatian Military Frontier.

Also, with this act Count Péter Keglevich, Commander-in-chief of the Kostajnica confirmed their earlier taxation and tenancy rights.

The County had three stockades (Upper, Middle, and Lower) and about a hundred people capable of military service according to the census on December 13, 1969.

After the demilitarization of the Military Frontier, Slabinja was a part of the Kostajnica District in the Zagreb County of the Kingdom of Croatia-Slavonia, within the Austro-Hungarian Empire.

[26] Monument to Fallen Fighters and Victims of Fascism from Slabinja during World War II in Yugoslavia was built in 1981.

[31] In the Serbian Orthodox Church administrative division, Slabinja belongs to the Kostajnica Parish of the Eparchy of upper Karlovac.

[33] In the Roman Catholic Church administration belongs to the Holy Trinity Parish from Dubica, Dubica-Kostajnica Deanery of Diocese of Sisak.

In 1944, during World War II, it was mined by the Ustasha damaging roof structure, vault, interior, and church inventory.

[35] Zdravko Kolar, a Yugoslav Air Force Major General and a full professor at the University of Belgrade, was born in the village in 1923.