Provided is a thermal transfer sheet having a good foil holding property of a transfer layer and a good foil cutting property of the transfer layer.
A thermal transfer sheet which comprises a substrate 1, a release layer 2, and a transfer layer 10 which are layered in this order, wherein the interval between the release layer 2 and the transfer layer 10 corresponds to the transfer interface of the transfer layer 10, and the release layer 2 contains an acid-modified polyolefin.