[Issue] An objective of providing an airbag device enabling efficiently suppressing injury of the occupant during an emergency.
[Resolution Means] A representative structure of the airbag device 100 according to the present invention includes an inflator 112 that is installed on a vehicle and is able to supply gas, an airbag cushion 104 that expands and deploys in front of the seating position of the vehicle occupant based on the gas, and at least one internal tether 116 with a first end 122 connected to the seating position side inside the airbag cushion 104 and a second end 124 connected to the vehicle front side inside the airbag cushion 104. The airbag cushion 104 is characterized by a recessed concave part 114 formed through pulling of the internal tether 116 on the center of the seating position side.