The electronic device includes a first casing, a second casing, and a connecting member engaging with the first casing to allow the first casing to turn about a first axis of rotation, and engaging with the second casing to allow the second casing to turn about a second axis of rotation. When a turning angle is 0 or 360 degrees, a distance between the first and second axes of rotation equals to the sum of a half of the sum of the thicknesses of the first and second casings and a clearance between the first and second casings, and the first axis of rotation is arranged at a position shifted from the center of the first casing in a reference direction to the second casing side, by a half of a value calculated by subtracting the thickness of the first casing from the thickness of a first casing-side connecting portion.