An apparatus, for forming a film, includes an ink jet head having a plurality of nozzles for discharging a liquid, a rotating device for rotating about a rotary axis a coating-object substrate onto which liquid discharged from the ink jet head is deposited, a relatively moving device for moving the ink jet head and the coating-object substrate relatively to each other between a nearby region of the coating-object substrate near the rotary axis and a separate region of the coating-object substrate separate from the rotary axis, and a relative movement control device for controlling the relatively moving device so that an angular velocity of rotation by the rotating device is reduced responsively as a relative position of the ink jet head and the coating-object substrate therebetween makes relative movement from the nearby region toward the separate region, and an angular velocity of rotation by the rotating device is reduced responsively as the relative position of the ink jet head and the coating-object substrate therebetween moves relatively from the nearby region toward the separate region.