Provided are a radiation detector and a radiographic imaging apparatus through which a high-quality radiographic image can be obtained. The radiation detector includes a portion in which a pixel array that has a plurality of pixels for accumulating electric charges generated in accordance with light converted from radiation； a conversion layer that converts the radiation into light； a light-transmissive pressure sensitive adhesive layer having a thickness of 2 μm to 7 μm； and a reflective layer that reflects the light converted by the conversion layer to a TFT substrate are provided in order.
