Sebaceous horn is an erupted cornified dermal nodular lesion that constituted of hyperkeratotic material. It is an unusual cutaneous lesion that is also termed as cornu cutaneum. These are found in areas like scalp, face, neck, and peripheral limbs exposed to solar radiation. Mostly these lesions are benign but underlying pre-malignant or malignant components are also encountered. We present an interesting and a rare case of sebaceous horn in 66-year male who presented to our out-patient department with an animal horn like cutaneous lesion for last 2 years. A 2-2.5 cm, brownish coloured, vertical cone shaped like horny projection was noted on the dorsal aspect of his left forearm. Because of having malignant potential, it is better to excise widely the horny lesion with a rim of 1 cm normal skin. Patient was operated as a day care procedure where wide local excision was performed taking 1cm rim of normal skin margin around the nodular lesion and sent for histopathological reporting. Histopathology report shown the lesion to have core of inspissated squamous epithelial debris material with peripheral rim of dead keratin or hyperkeratosis with adjacent normal skin. No malignant cells were found.