An in-vehicle steering device, comprising a steering wheel, and an airbag mechanism that is built in the steering wheel and includes an airbag body deployable to a vehicle body rear side, wherein the steering device further comprises an in-vehicle component built in the steering wheel, and the in-vehicle component has a recessed groove portion for guiding the airbag body to be deployed when the airbag body is deployed in a front-rear direction of the vehicle body.