Beli Manastir is a town and municipality in eastern Croatia. It is the principal town of the Croatian part of Baranja, located in the Osijek-Baranja county.
The name means "white monastery" in Croatian and primarily in Serbian (its name "Beli manastir" as opposed to standard Croatian "Bijeli samostan" reflects the speech of the local Slavic population rather than adhering to specific Croatian or Serbian guidelines). This name was introduced in 1923 during the Kingdom of Serbs, Croats and Slovenes, and before this it was known as Monoštor in Croatian and Serbian. It is also known as Pélmonostor in Hungarian, Manoster in German and Бели Манастир in Serbian Cyrillic.
Other names formerly used for the town were: Pél, Bell, and Monostor. All names are connected with monasteries that existed in history at this location. The first monastery was built in the 9th century during the rule of Slavic duke Kocelj but was later razed, and all that remained of it was pil (obelisk in English), hence the later Hungarian name Pél, which was a version of the Slavic word.