A one-year-and-nine-months-old, neutered, female Miniature schnauzer was presented to the primarycare veterinarian with a skin lesion between the eyebrows. There were multiple papulae presentat birth, and later, small fistulae with protruding hair bundles appeared. Topical antibiotic therapy andepilation of the hairs only brought temporary relief and a presumptive diagnosis of dermoid sinus cystswas made. The dog was referred and the skin lesions were surgically excised. During histopathologicalexamination, the lesion was diagnosed as multiple dermoid sinus cysts, a consequence of the incompleteseparation of the ectoderm during embryogenesis. Depending on the depth of the tubular dermalinvaginations and the location of the lesions, different types have been recognized. This is the third dogdescribed in the literature with dermoid sinus cysts on the head.