Authors have described a case of bilateral acinic cell carcinoma of parotid gland. The patient has been treated successfully by left superficial parotidectomy and right total parotidectomy followed by complementary Co 60 therapy. During 3 years after surgery the patient revealed no recurrence of the disease. Clinical course, histology and pathology have also been presented. The authors have pointed out the difficulties in diagnosing ACC because of the variety of histological pictures and unclear terminology.