A motion assistance apparatus includes a proximal frame configured to support a proximal part of a user, a connecting frame rotatably connected to the proximal frame, a distal frame rotatably connected to the connecting frame and configured to support a distal part of the user, and a power transmitter including a slider configured to slide along the proximal frame, a pusher rotatably connected to the distal frame and the slider, and a coupler configured to connect the slider and the pusher and positioned closer to the proximal part of the user than a rotation axis of the connecting frame in the whole range of motion.
