Abstract: A mobile office organizer and portfolio provide an organizer with a front pocket for storage of the portfolio when not in use, and a portfolio which provides for internal storage of documents when not in use and external mounting of documents when required for modification or reference. The portfolio is based on a flexible cover which can be folded and closed, and which includes a ring and binder assembly for organization and retention of sheets. The rings of the ring and binder assembly extend from the interior to the exterior of the portfolio allowing papers to be mounted thereon either inside or outside of the covers.