The communication support device comprises an imaging unit, a counterpart detector, a priority level setting unit, a priority determination unit, and a notification unit. The imaging unit that captures an image of a surrounding environment of a user to acquire a captured image. The counterpart detector detects a plurality of predetermined counterparts in the captured image. The a priority level setting unit sets priority levels respectively for the plurality of counterparts based on a predetermined relationship between the user and each of the plurality of counterparts. The priority determination unit determines priorities of the plurality of counterparts based on the priority levels. The notification unit selects information regarding the plurality of counterparts based on the priorities and notifies the user of the selected information.