An airbag device includes a curtain airbag deployed to a vehicle width direction outer side of an occupant seated in a vehicle seat; a front airbag provided at a front side of the vehicle seat, which is deployed to a vehicle front side of the occupant; an airbag housing, provided at the front side of the vehicle seat, in which the front airbag is housed before inflating; and an airbag door that covers the airbag housing from a cabin side and that is displaced toward a cabin side, in a case in which the front airbag inflates such that the cabin side of the airbag housing is opened. The airbag door includes plural door portions and the airbag device is provided with a limiting member that restricts tilting of a door portion that tilts about a hinge portion disposed at a vehicle width direction inner side of the airbag housing.