Objective: Theater actors are considered as elite vocal performers whom quality of voice is of utmost importance. It was thought that speech breathing characteristics of theater actors were different compared with those of lay talkers. However, findings on this issue were generally based on studies conducted by the respiratory kinematics and muscular activity via using indirect air volume measures. These measures were by no means related with the respiratory-phonatory interaction. One of the objective methods that is used for evaluating voice quality is the phonatory-aerodynamic characteristics. Phonatory-Aerodynamic System (PAS) primarily examines the respiratory-phonatory interaction. The aim of the present study was to search the phonatory-aerodynamic characteristics of drama students.