[Problem] To provide a termination control apparatus that can provide an optimum termination state. [Solution] Included are: an input terminal to which an input signal is inputted; a termination resistance unit that terminates the input terminal by use of a variable resistor the resistance value of which can be set; a voltage measurement unit that measures the voltage of the input signal; and a control unit that changes the resistance value or a target voltage range when the voltage is not within the target voltage range having been set for the input signal on the basis of both an absolute maximum rated value and an operation-guaranteed voltage.