Abstract: A collapsible stereoscopic viewer includes a generally rectangular housing formed of parallel sides and top and bottom surfaces all pivotally secured to form a collapsible rectangular. A pair of internal walls are similarly secured between the top and bottom surfaces to form two optical channels within the housing. A pair of lens supports are pivotally coupled to the housing interior and may be secured therein using a tab and slot attachment. Each lens support receives and supports a conventional eyepiece lens. A pair of front walls are pivotally secured within the housing interior and may be locked into a vertical position by a tab and slot arrangement. Each front wall defines an aperture aligned with one of the eyepieces. The housing further includes a pair of downwardly extending curved arms which support a pivotally coupled planar image plane movable between a vertical and horizontal position upon the arms.