Abstract: Provided is a damper device including a first rotary body that is rotated about a rotational axis; a second rotary body that is rotated relative to the first rotary body; an elastic mechanism portion; and a control plate that includes a radially extending portion that abuts against the elastic mechanism portion and an axially extending portion that is partially housed in at least one of the first rotary body and the second rotary body. The control plate is disposed in only one of the first housing space and the second housing space in the axial direction. The device also includes a first sliding portion that generates first sliding torque; and a second sliding portion that generates second sliding torque. The first sliding torque and the second sliding torque are generated when the first rotary body and the second rotary body are rotated relative to each other.