Qarah Su (Persian: قره سو, also Romanized as Qarah Sū, Qarā Sū, and Qareh Sū; also known as Kerāshu)[1] is a village in Rahjerd-e Sharqi Rural District, Salafchegan District, Qom County, Qom Province, Iran.

At the 2006 census, its population was 15, in 5 families.

[2] This Qom province location article is a stub.

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