Auricular petrification is an infrequent finding in which the ears become completely or partially rigid. The most frequent cause is the calcification of the auricular cartilage and, infrequently, auricular ossification. Ossification may be due to hypothermia, physical factors, inflammatory processes and different endocrinopathies. Severe hypothermia is the most frequent cause. We present a case of bilateral ossification of the auricular cartilage secondary to hypothermia.