This three-dimensional endoscope is provided with optical systems that are provided with a pair of lens groups, which focus light coming from an object, a pair of first prisms, which deflect the light focused by the respective lens groups, and a pair of second prisms, which deflect the light deflected by the respective first prisms, and that form two images exhibiting parallax a distal-end-side rotating mechanism that rotates the pair of lens groups and the pair of first prisms relative to the pair of second prisms about an axis perpendicular to the optical axes an imaging device that captures the two images exhibiting parallax formed by the optical systems and an image processing portion that processes screen images acquired by the imaging device and that rotates the two images acquired by the imaging device in opposite directions from each other.
