Abstract: An auto trunk organizer comprising a cabinet member, a storage member, and mechanism for detachably securing the storage member to the cabinet member. The cabinet member has an outer housing enclosing an interior cavity, a plurality of draw members having draw latching mechanisms, and at least one pivoting door member having a latching mechanism. The storage member is portable and includes multiple, separate compartments suitable for storing documents. The storage member preferably includes an accordion type file folder. The attachment mechanism is connected between the cabinet member and the storage member. The attachment mechanism allows the storage member to be detachably secured to the cabinet member. Any attachment mechanism that will allow the storage member to be detachably secured to the cabinet member may be used. The attachment mechanism preferably includes either, or both, a hook-and-pile type fastener or a snap type fastener.