A bathtub spout cover includes a plurality of inflatable side compartments joined along their edges to form a protective sleeve and an inflatable end compartment closing one end of the protective sleeve. An opening in the protective sleeve permits discharge of water from the bathtub spout. A removable tear-out strip in the protective sleeve provides access to a shower control knob on the bathtub spout. Preferably, the cover is made by sealing together sheets of plastic material. An inflation port permits the cover to be inflated by mouth.