To be able to compactly dispose an airbag device for a saddle-type vehicle provided with an airbag deployable upward. An airbag device for a saddle-type vehicle includes: an inflator; an airbag adapted to be expanded by gas discharged from the inflator; and a retainer accommodating the airbag. The airbag is deployed upward from an opening of the retainer. The retainer is disposed in front of a head pipe adapted to support a handle for steering. A wind screen is disposed above the retainer. The wind screen openably and closably covers the opening of the retainer.