Provided is a multi-mode ultra broadband wireless communication apparatus and method, and a multi-mode ultra broadband transmitting apparatus may include a baseband outputting unit to parallelly output multiple digital signals, a mid-frequency processing unit to up-convert the outputted parallel digital signals to mid-frequencies, and the up-conversion is performed in a range where the outputted parallel digital signals do not cause interference with each other, a parallel-to-serial converter to convert, to a serial digital signal, the converted parallel digital signals that are up-converted to the mid-frequencies, a digital-to-analog converter to convert the serial digital signal to an analog signal, and a radio frequency processing unit to up-convert the analog signal to multiple transmission frequencies respectively corresponding to desired communication services.