Paper marbling is a technique for producing colorful patterns on paper (or, rarely, on other surfaces) by swirls of paint, traditionally water-based paint, floating on water. The resulting marbled paper is a popular decorative material, especially as endpapers in book binding and stationery. Part of its appeal is that each print is unique.

The age old art of making paper look like marble.

The basic process needs only blank paper, a shallow tray filled with water, and some free flowing water-based paint. The paper must be strong enough to withstand being immersed in water without tearing.