An object is to provide a thermally conductive adhesive sheet capable of making a heat generating body and a heat radiating body adhere to each other easily and with a sufficient adhesive force. Provided is a thermally conductive adhesive sheet including an adhesive agent layer formed by molding a thermally conductive adhesive agent composition including an acrylic polymer component into a sheet-like shape, wherein the adhesive force at the time of 180° peeling is 1 N/20 mm or more and the contact thermal resistance is 0.6 cm2·K/W or less when the adhesive sheet is pressure bonded to an adherend with a pressure of 200 kPa.