AIRBAG DEVICE FOR SADDLED VEHICLE

To enable a retainer to be easily manufactured in accordance with a position where an inflator is disposed. In an airbag device for a saddled vehicle including: a retainer 41 provided behind a head pipe; an inflator 43; and an airbag accommodated in the retainer 41, the airbag being configured to be expanded by gas released by the inflator 43 and deployed in front of a passenger, the retainer 41 has a box shape formed by assembling a plurality of components, the inflator 43 is disposed to be offset outward in a vehicle width direction relative to the head pipe 15, the first component 51 covers the inflator 43 from a vehicle front side, a second component 52 is provided behind the head pipe, and a third component 53 is provided on a side of the passenger and is fitted to the second component 52 and the first component 51 from a back side.