The present invention is a square bottle. In the square bottle, a body portion extending in a vertical direction is configured that a panel surface portion and a corner surface portion are disposed, a circumferential groove is formed at a center portion of the body portion in the vertical direction, a recessed portion for finger contact is disposed in a portion of the circumferential groove located on the panel surface portion, a horizontal stripe portion is provided at an upper end portion of an inner surface defining the circumferential groove, and a vertical stripe portion extending downward from the horizontal stripe portion is disposed.