Hemifacial microsomia is a rare congenital, heterogeneous malformation disorder affecting predominantly unilateral face. The disorder is associated with unusual strange distortion of the face with facial asymmetry and may cause psychological problems in the affected child and even the parents. Hemifacial microsomia is best managed by a multidisciplinary team. However, physicians working in many geographic areas of the world lacking active effective multidisciplinary teams, and major craniofacial centers, will face a serious challenge and a tough time in making the appropriate referrals which ensure satisfactory management. The complexity of the defects in this condition, the potentially non-static nature of the condition, and the lack of extensive management experiences with such rare condition make management challenging even when the appropriate timely referrals can be ensured. The aim of this book is to report the occurrence of non-syndromic hemifacial microsomia in two unrelated Iraqi children for the first time. A second aim of this book is to describe the documentation of hemifacial microsomia in the world literature during the 1970s and 1980s.