A medical imaging device includes: a left eye imaging element including a left eye light receiving surface configured to receive left eye observation light from an observed region of a subject； and a right eye imaging element including a right eye light receiving surface configured to receive right eye observation light being an observation light from the observed region and having a parallax from the left eye observation light. The left eye imaging element and the right eye imaging element are arranged such that: short sides of the left eye light receiving surface and the right eye light receiving surface are along a direction in which an optical axes of the left eye observation light and the right eye observation light are juxtaposed with each other； and long sides of the left eye light receiving surface and long sides of the right eye light receiving surface oppose each other.
