Abstract: It is an object of the present invention to provide a timepiece movement holding structure and a timepiece which make it possible to realize a design that is elongated in the longitudinal direction or the lateral direction. The timepiece movement holding structure comprises a first casing frame which holds the end part of the movement in the 6 o'clock direction, and a second casing frame which holds the end part of the movement in the 12 o'clock direction. The widths of the first casing frame and second casing frame in the 3 o'clock to 9 o'clock direction are set substantially the same as the width of the movement in the 3 o'clock to 9 o'clock direction. These casing frames and are disposed substantially within the width of the movement in the 3 o'clock to 9 o'clock direction, and the movement is held in the plane direction between the interior-forming case body portions through of the case body and the first casing frame and second casing frame .