The Objective is to study the relation between craniocervical posture and skeletal patterns of malocclusion in the sagittal plane in adults , None of them had a history of previous orthodontic or orthognathic surgery treatment by using lateral cephalometric radiographs. our sample consisted of 71 adults patients; class I (n=21) , class II (n= 30 ) , class III (n=20 ) .All radiographes were taken in natural head position.