A stereoscopic endoscope apparatus includes: an insertion portion 21 to be inserted into a subject； a variable focus objective optical system 41 and a fixed focus objective optical system 51 that are arranged in a distal end portion 22 of the insertion portion 21； an image pickup section 61 that picks up an optical image； and an image signal generation output section 94 configured to output an intra-subject image acquired by the variable focus objective optical system 41 as an image signal, when a focal length of the variable focus objective optical system 41 and a focal length of the fixed focus objective optical system 51 are different from each other, and output intra-subject images acquired by the variable focus objective optical system 41 and the fixed focus objective optical system 51 as an image signal, when the focal length of the variable focus objective optical system 41 and the focal length of the fixed focus objective optical system 51 are coincident with each other.
