The invention provides an electronic device in which it is easy to suppress deterioration in sensitivity of an antenna. An electronic device includes an antenna (30), a display unit (20), a case (2), and a band (3), wherein a width of a short-circuit portion (32) in a direction intersecting a line segment binding a position of the short-circuit portion (32) connected to an antenna electrode (34) and a position of the short-circuit portion (32) connected to a circuit substrate (26) is narrower than a maximum width of the antenna electrode (34) and a maximum width of the circuit substrate in a direction oriented along the intersection direction, in a case in a plan view of the case (2) in a direction vertical to the display unit (20) and from the side of the display unit (20), in a case in which a letter is displayed on the display unit (20) on the assumption that a direction oriented along a line parallel in a longitudinal direction of the band (3) is a vertical direction, an upper side of the letter is defined as 0 degrees, a clockwise rotation direction is defined as being positive, and one circle is defined as 360 degrees, in this case, the short-circuit portion (32) is disposed in a range equal to or greater than 180 degrees and equal to or less than 360 degrees in the clockwise rotation direction of the case (2).