The present invention provides an imaging control apparatus, a radiographic imaging apparatus, and a control method. The imaging control apparatus includes a determination unit and a setting unit. The determination unit is configured to determine, based on a state of communication to a radiation generator, which of a synchronous imaging mode and an asynchronous imaging mode is to be used to obtain radiographic image data. The synchronous imaging mode is a mode in which a radiographic imaging apparatus obtains radiographic image data by operating in synchronization with the radiation generator. The asynchronous imaging mode is a mode in which the radiographic imaging apparatus obtains radiographic image data without operating in synchronization with the radiation generator. The setting unit is configured to output an instruction for setting the imaging mode determined by the determination unit in the radiographic imaging apparatus such that the radiographic imaging apparatus obtains the radiographic image data in the imaging mode determined by the determination unit.