A touch sensor includes: a base layer; a first electrode member including first touch electrodes arranged on the base layer along a first direction and electrically connected in the first direction, the first touch electrodes including first openings; a second electrode member including second touch electrodes arranged on the base layer along a second direction intersecting the first direction and electrically connected in the second direction, the second touch electrodes including second openings; a first strain gauge including first resistance lines disposed in the first openings and electrically connected in the first direction; and a second strain gauge including second resistance lines, which are disposed in the second openings and electrically connected in the second direction, wherein the first electrode member may be insulated from the second electrode member, and wherein the first strain gauge may be insulated from the second strain gauge.