A rotary developing device that rotates about a rotational axis includes plural developing units, an energized member, a hollow cylindrical unit, a first energizing member, a rotatable unit, a second energizing member, a first conductive member, and a second conductive member. Each developing unit develops a latent image formed on an image holding member into a visible image, and is rotatable about the rotational axis so as to be sequentially movable to a developing position facing the image holding member. The hollow cylindrical unit is arranged along the rotational axis. The rotatable unit is supported rotatably with respect to the hollow cylindrical unit. One end of the first conductive member is connected to the first energizing member supported on an outer periphery of the hollow cylindrical unit. The second conductive member connects the second energizing member supported by the rotatable unit to the energized member supported in a developing unit.