Provided is a radiation imaging system including: a first radiation imaging apparatus, which is configured to be capable of taking a first radiation image based on first examination information; a second radiation imaging apparatus, which is configured to be capable of taking a second radiation image based on second examination information; and a control unit, which is configured to control imaging of the second radiation image in the second radiation imaging apparatus based on progress information related to imaging of the first radiation image in the first radiation imaging apparatus when predetermined examination information is duplicated between the first examination information and the second examination information.