Rejowiec (Polish: [rɛˈjɔvjɛt͡s]; Yiddish: רייוועץ or רייוויץ) is a town in Chełm County, Lublin Voivodeship, in eastern Poland.

In 1547, Rejowiec received acknowledgement (and privileges) as a town, from King Sigismund I the Old, including the right to hold two annual fairs, and an exemption from taxes for 10 years.

During the joint German-Soviet invasion of Poland, which started World War II in September 1939, the town was invaded by Germany and then occupied until 1944.

The director of the local sugar factory, Jan Sztaba, was among more than 115 prominent Poles from the region murdered by the Germans in Kumowa Dolina in 1940 during the AB-Aktion.

Additionally, small groups of Jews were transported to local labor camps such located in Krychów, Sawin, Sajczyce and Chełm.