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The goal of this study was to report the first case of antral stenosis in a cat. We have described a clinical case of a 9 months old domestic shorthaired cat referred for persistent and refractory vomiting, anorexia and loss of weight. Ultrasound (US) examination detected a mild gastric distension, mild wall thickening (5mm), severe serosal irregularities and a constriction between the fundus and body. Computed tomography (CT) was then performed: a severe gastric stenosis between the body and antrum with minimum contrast transit was detected and confirmed by flexible endoscopic examination. The antral localization of the stenosis was revealed after a cranial celiotomy and Y-U plastic was necessary to correct the defect. The patient completely recovered after surgery with significant body weight gain and remained in remission throughout a 2-years follow-up. While in human medicine there is evidence of acquired antral stenosis, no information is available about the same lesion in the feline species. To the best of our knowledge, this is the first case of antral stenosis in cats.