To provide a radar device, capable of eliminating the influence based on the local feedthrough in the FMCW radar device. There is provided a radar device including: an oscillator configured to oscillate a local signal; a transmitting antenna configured to emit a transmission signal based on the local signal; a receiving antenna configured to receive a reflected wave in which the transmission signal is reflected from a target; a mixer configured to multiply the reflected wave and the local signal by each other to produce a multiplied signal; and a first shifter provided between the oscillator and the mixer and configured to shift a phase of the local signal.