A 3D endoscope (1) includes an insertion portion (10), a left imaging unit (21L) which comprises an optical system (25L) a imaging device (27L), a right imaging unit (21R) which comprises an imaging optical system (25R) and a right imaging device and a receiving portion (31L) which receives the left imaging unit (21L), a receiving portion (31R) which receives the right imaging unit (21R). The 3D endoscope (1) includes a body (12) provided at a side of a distal end (10a) of the insertion portion (10), the body (12) supporting the receiving portion (31L, 31R) at an angle to a longitudinal direction of the insertion portion (10) so that the inclination of a left optical axis (211L) relative to the longitudinal direction, the inclination of a right optical axis (211R) relative to the longitudinal direction, the angle of rotation of the left imaging unit (21L) around the left optical axis (211L), and the angle of rotation of the right imaging unit (21R) around the right optical axis (211R) are adjustable.
