A far-side airbag apparatus comprising: a folded airbag, which is adapted to be stored, in a storage form, in a vehicle seat, wherein the vehicle seat is one of two vehicle seats (13, 14) arranged in a width direction of a vehicle, and the airbag is stored in a side portion that faces the adjacent seat, each vehicle seat includes a headrest, one of the two vehicle seats in which the airbag is stored is a first vehicle seat, the other vehicle seat, which is adjacent to the first vehicle seat, is a second vehicle seat; a gas generator, which supplies inflation gas to the airbag in response to an impact applied to a side wall of the vehicle from a side, wherein the far-side airbag apparatus is configured such that the airbag is deployed and inflated forward and upward between the first and second vehicle seats (13, 14) to a position above the headrest of the first vehicle seat, the airbag has, in a lower part, a gas diverting passage that allows a greater amount of inflation gas from the gas generator to flow forward than upward, the airbag in the uninflated-and-spread form, in which the airbag is spread to be flat without being filled with inflation gas, includes a rear-lower inflation portion, which includes the gas diverting passage, and a front-upper inflation portion adjacent to the rear-lower inflation portion, wherein the front-upper inflation portion is in front of and above the rear-lower inflation portion, the front-upper inflation portion including at least three bend portions (52, 53, 54), which are arranged in a flowing direction of inflation gas, characterized in that, the rear-lower inflation portion further includes the gas generator, and when the airbag is in a transitional form, which is between the uninflated-and-spread form and the storage form, the bend portions (52, 53, 54) are each bent relative to the adjacent bend portion and rolled toward the second vehicle seat relative to the rear-lower inflation portion such that the closer a bend portion (52, 53, 54) is to a downstream end, the more inward the bend portion (52, 53, 54) is located, and the rolled bend portions (52, 53, 54) are folded back to the rear-lower inflation portion. a folded airbag, which is adapted to be stored, in a storage form, in a vehicle seat, wherein the vehicle seat is one of two vehicle seats (13, 14) arranged in a width direction of a vehicle, and the airbag is stored in a side portion that faces the adjacent seat, each vehicle seat includes a headrest, one of the two vehicle seats in which the airbag is stored is a first vehicle seat, the other vehicle seat, which is adjacent to the first vehicle seat, is a second vehicle seat; a gas generator, which supplies inflation gas to the airbag in response to an impact applied to a side wall of the vehicle from a side, wherein the far-side airbag apparatus is configured such that the airbag is deployed and inflated forward and upward between the first and second vehicle seats (13, 14) to a position above the headrest of the first vehicle seat, the airbag has, in a lower part, a gas diverting passage that allows a greater amount of inflation gas from the gas generator to flow forward than upward, the airbag in the uninflated-and-spread form, in which the airbag is spread to be flat without being filled with inflation gas, includes a rear-lower inflation portion, which includes the gas diverting passage, and a front-upper inflation portion adjacent to the rear-lower inflation portion, wherein the front-upper inflation portion is in front of and above the rear-lower inflation portion, the front-upper inflation portion including at least three bend portions (52, 53, 54), which are arranged in a flowing direction of inflation gas, a rear-lower inflation portion, which includes the gas diverting passage, and a front-upper inflation portion adjacent to the rear-lower inflation portion, wherein the front-upper inflation portion is in front of and above the rear-lower inflation portion, the front-upper inflation portion including at least three bend portions (52, 53, 54), which are arranged in a flowing direction of inflation gas, characterized in that, the rear-lower inflation portion further includes the gas generator, and when the airbag is in a transitional form, which is between the uninflated-and-spread form and the storage form, the bend portions (52, 53, 54) are each bent relative to the adjacent bend portion and rolled toward the second vehicle seat relative to the rear-lower inflation portion such that the closer a bend portion (52, 53, 54) is to a downstream end, the more inward the bend portion (52, 53, 54) is located, and the rolled bend portions (52, 53, 54) are folded back to the rear-lower inflation portion. the bend portions (52, 53, 54) are each bent relative to the adjacent bend portion and rolled toward the second vehicle seat relative to the rear-lower inflation portion such that the closer a bend portion (52, 53, 54) is to a downstream end, the more inward the bend portion (52, 53, 54) is located, and the rolled bend portions (52, 53, 54) are folded back to the rear-lower inflation portion.