The present disclosure is a tension control device which includes a pressing member configured to press an object in a noncontact manner by spraying a gas onto the object to which tension is applied, an actuator configured to vary a position of the pressing member, a pressure sensor configured to detect pressure of the gas, a gap sensor configured to detect a floating amount of the object from the pressing member, and a control unit configured to control the actuator based on a detected value of the pressure sensor and a detected value of the gap sensor.