Abstract: An inexpensive, attractive, easy to install, disposable bath liner and tile shield that prevents water from contacting walls and infiltrating behind walls and into a building structure, which may be removably attached to bath walls. The disposable bath liner has a side panel and opposing end panels for covering and protecting a side wall and opposing end walls of a bath enclosure, is flexible, capable of being removably attached to the bath walls, may be transparent or opaque, depending upon a user's needs, and of a material that may be imprinted with a decorative design. The disposable bath liner is also durable and light weight, easily fits irregularly shaped walls and a variety of bath enclosure sizes, is fabricated from materials that do not corrode, rust, bleed onto, and/or soil bath walls, is installable as a retrofit to existing baths, and has cut outs for bath fixtures to fit therethrough.