Thermal transfer sheet for transferring protective layer

A thermal transfer sheet for transferring a protective layer on an image formed on a receiving body by a thermal transfer method, comprising a substrate and a thermally transferable protective layer provided on the substrate, the protective layer comprising an inorganic stratified compound component and a binder component, the inorganic stratified compound component being contained in an amount of 3 to 150 parts by weight relative to 100 parts by weight of the binder component, wherein the inorganic stratified compound component comprises 2 or more groups of laminas of at least one inorganic stratified compound, the respective groups having different average particle sizes with each other.