Provided are an optical modulation device and an apparatus including the same. The optical modulation device may include a plurality of reflectors located on a driving circuit substrate, a plurality of nano-antennas located on the plurality of reflectors, and an active layer located between the plurality of reflectors and the plurality of nano-antennas and patterned to have a plurality of openings. The optical modulation device may further include a plurality of first connection members configured to electrically connect the driving circuit substrate to the plurality of reflectors and a plurality of second connection members configured to electrically connect the driving circuit substrate to the plurality of nano-antennas. The plurality of second connection members may be connected to the plurality of nano-antennas through the plurality of openings.