A wearable device that is mounted with a fingerprint recognition sensor is provided. The wearable device includes a housing including a first, a second face facing, and a third face facing, a support structure disposed between the first and second faces, a display disposed on the first face to be exposed, and including a window having a first flange and a second flange disposed to be opposite the first face, and a display module coupled to the window to face the second direction, the display being disposed on one face of the support structure, a printed circuit board disposed on another face of the support structure, at least one light emitter mounted adjacent to the first flange to emit light to a first region of the window, and at least one light receptor mounted adjacent to the second flange to receive light reflected from the first region.