Cham-e Zir (, also Romanized as Cham-e Zër; also known as Cham-e Rëz and Chamrëz) is a village in Kamfiruz-e Shomali Rural District, Kamfiruz District, Marvdasht County, Fars province, Iran. At the 2006 census, its population was 389, in 79 families.