An endoscopic imaging device includes an objective optical system, an imaging element, a transmissive protective substrate, an optical member, and a circuit board. The objective optical system imports observation light from a subject. The imaging element captures an image of the observation light. The transmissive protective substrate is disposed on an imaging surface of the imaging element with an air gap interposed therebetween. The optical member is disposed between the objective optical system and the transmissive protective substrate to guide light from the objective optical system to the imaging surface. The circuit board is disposed so that an area where an electronic component is mounted faces the optical member and the electronic component is brought into contact with an outer surface of the optical member.