Komarów-Osada ([kɔˈmaruf ɔˈsada]) is a village in Zamość County, Lublin Voivodeship, in eastern Poland.

It was the largest cavalry battle in the history of war since 1813, the last great battle of any significance in which cavalry was used as such and not as mounted infantry, and a decisive victory for the Poles.

The Jews were subjected to forced labor: road construction, sawmill, Luftwaffe military base.

On 5 October 1942, 50 young men and women were executed by a Gestapo unit.

5,000 Jews mainly from Zamość region were deported to Bełżec and Sobibor extermination camps.