Cheshmeh-ye Mostafa Beyg (, also Romanized as Cheshmeh-ye Moşţafá Beyg; also known as Cheshmeh-ye Moşţafá Beg) is a village in Dasht-e Hor Rural District, in the Central District of Salas-e Babajani County, Kermanshah Province, Iran. At the 2006 census, its population was 160, in 32 families.
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