Introduction: Knowledge about the maxillary sinus is of great importance for orthodontists as it both affects and is affected by orthodontic treatment. Cone-beam computed tomography (CBCT) madeevaluating the maxillary sinus become more accurate. Aim: to investigate if there is a relation between the maxillary sinus volume and facial pattern in adults using cone beam computed tomography. Methods: CBCT scans of 36 adults were obtained. They were divided equally into three groups: Normal facialpattern, Long face and Short face. The volume of the maxillary sinus on both the right and left sides were measured in each group using PlanmeccaRomaxis software program. Results: The results of this study were that there is no significance difference between the maxillary sinus volume in the different groups of facial pattern. There is no significance between the volume of the maxillary sinus on the right and left side. Conclusions: There is no correlation between the maxillary sinus volume and the vertical growth pattern. The right and left maxillary sinus are corresponding to each other in volume.