Rud Bar-e Firuz Ja (Persian: رودبارفيروزجا, also Romanized as Rūd Bār-e Fīrūz Jā; also known as Rūd Bār) is a village in Sajjadrud Rural District, Bandpey-ye Sharqi District, Babol County, Mazandaran Province, Iran. At the 2006 census, its population was 97, in 24 families.