Seyu Khosavi Hashem (, also Romanized as Seyū Khosavī Hāshem; also known as So’ūkhsū Hāshem and Soyūkhsū Hāshem) is a village in Rasteqan Rural District of Gholaman District, Raz and Jargalan County, North Khorasan province, Iran.
At the 2006 National Census, its population was 1,359 in 286 households, when it was in Gholaman Rural District of the former Raz and Jargalan District of Bojnord County. The following census in 2011 counted 1,540 people in 390 households. The latest census in 2016 showed a population of 1,441 people in 393 households, by which time the district had been separated from the county in the establishment of Raz and Jargalan County. It was the largest village in its rural district.