A dynamic radiographic image processing apparatus includes: an estimator that extracts a first image of an anatomical region from a first frame image and a second image of the same anatomical region as the first image from a second frame image, and estimates a quantity of motion of a body from a change from the first image to the second image, the first frame image and the second frame image being included in a dynamic radiographic image obtained by radiographic imaging of the body in a respiratory state, motion accompanying respiration not appearing in the first image and the second image； and an image converter that performs image conversion on the second frame image to suppress influence of motion of the body, using the quantity of motion.
