Abstract: Improved cardboard furniture (e.g., chair, sofa, ottoman or the like) comprising a structural core of periodically slotted cardboard sheets interlocked in a criss-crossing, egg crate divider type assembly with external stabilizing cardboard surfaces made from cardboard sheets having their perimeter periodically slotted such as to form tabs that fold, insert and engage in the openings of the egg crate divider type assembly. Such cardboard furniture can be provided in a kit form that is readily hand assembled, without special tools, adhesives or other fasteners into structurally stable and anatomically correct light weight furniture.