Zeydar (Persian: زيدر, also Romanized as Zaidar; also known as Zainalābād and Zeynalābād)[1] is a village in Naharjan Rural District, Mud District, Sarbisheh County, South Khorasan Province, Iran.

At the 2006 census, its population was 373, in 90 families.

[2] This Sarbisheh County location article is a stub.

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