To provide an on-vehicle imaging device outputting appropriate image data according to luminous energy of incident light while having a simple structure.

This on-vehicle imaging device 10 is provided with: an imaging optical system 11; an image processing means 14 capable of outputting image data by generating the image data based on an output signal from an imaging element 12; a filter drive part 16 for moving forward and backward an infrared cut filter 18 on an optical path L of the imaging optical system; and a control calculation means 15 driving and controlling the filter drive part 16 and the image processing means 14. The control calculation means 15 acquires operation information provided to an illumination switch SW for changeover operation of illumination of a vehicle C for mounting the imaging device, drives the filter drive part 16 to evacuate the infrared cut filter 18 from the optical path L when the illumination 60 is lit, and also drives the filter drive part 16 to position the infrared cut filter 18 on the optical path when the illumination 60 is turned off.