A signal processing device and a display apparatus for vehicle including the same are disclosed. The signal processing device includes a processor configured to perform signal processing for a display located in a vehicle, wherein the processor executes first to third virtual machines on a hypervisor in the processor, the second virtual machine is operated for a first display, the third virtual machine is operated for a second display, and the first virtual machine in the processor includes a first interface configured to receive sensor data from a sensor device in the vehicle and a radio signal from a tuner in the vehicle and an input and output server interface configured to transmit data corresponding to the sensor data or the radio signal received from the first interface to at least one of the second virtual machine or the third virtual machine.