The purpose of this paper is to describe the macroscopic and microscopic characteristics of jejunal volvulus in a calf and emphasize its importance as a cause of mortality in neonatal calves. A dead 10-day Holstein calf from a herd with a history of diarrhea, was referred to Department of Pathology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad. After necropsy and macroscopic examinations, tissue samples were taken from the lesions, processed through routine paraffin embedding technique, and studied histopathologically. According to macroscopic and microscopic features, the cause of the calf death was diagnosed as volvulus in the middle region of jejunum. To our knowledge, there is no report on volvulus in this region of small intestine in calves

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