To provide a tire road noise reduction apparatus which accurately detects tire road noise and appropriately reduces it, and to provide a tire road noise evaluation method for appropriately evaluating the tire road noise.

The tire road noise reduction apparatus includes: a wheel vibration measurement device 13 for measuring vibration of a wheel 12 on which a tire 11 is mounted; a cancellation vibration generating device 14 for generating cancellation vibration for canceling the wheel vibration measured by the wheel vibration measurement device 13; and a cancellation vibration output device 15 for outputting cancellation vibration generated by the cancellation vibration generation device 14.