Abstract: A vascular hamartoma is a nonneoplastic malformation that is present at birth and grows until puberty. A one-day-old female native calf due to a tumor-like mass in the gingiva was referred to Department of Pathobiology, Faculty of Veterinary Medicine, Islamic Azad University of Shahrekord. After gross examination of the mass, surgical treatment was performed. Histopathology of the excisional biopsy revealed proliferation of endothelial cells and numerous capillary intermixed with loose connective tissue. The tumor-like mass was diagnosed as gingival vascular hamartoma based on congenitally occurrence, gross and histopathological characteristics.