Objective. To identify morphometric variability of the maxillary sinus in mesoprosopic and euryprosopic forms of facial skull using anatomical parameters. Materials and methods. A total of 144 computed tomograms of people in the second period of mature age were studied. Of these, 77 records of patients with the mesoprosopic form of facial skull and 67 tomograms with the euryprosopic form. The height and width of the maxillary sinus were measured on the tomograms. The indices of the ratio of the height and width of the maxillary sinus in the right-sided (IHWd) and left-sided (IHWs) sinuses, as well as the coefficient of relative symmetry of the maxillary sinuses were calculated. The SPSS Statistics 21.0 software product was used for statistical analysis. Results. The obtained parameter values demonstrate moderate variability with the highest variation coefficient in IHWd on male skulls with a mesoprosopic form. A higher value of IHWd compared to IHWs was found in male objects with the euryprosopic form. In people of both sexes, objects with asymmetric maxillary sinuses predominate with the mesoprosopic and leptoprosopic forms of the facial skull. Conclusion. Most parameters in the mesoprosopic form of the facial skull are higher than in the euryprosopic form. This is typical for the IHWs value in people of both sexes, and the IHWd values in women. The exception is the coefficient of relative symmetry of the sinuses in men, which prevails in the euryprosopic form of the facial skull.