A liquid jet device includes a head body configured to jet droplets from a nozzle, a frame at which the head body is positioned, a grounding portion configured to contact a first side surface of the head body in a removal direction from the frame to electrically couple the head body to the frame, and a first pin serving as a pin for positioning the head body with respect to the frame, wherein a contact position between the first side surface and the grounding portion and a position of the first pin overlap in a normal direction of the first side surface.