A steering system comprising: a steering member; a steering shaft to which the steering member is coupled at one end of the steering shaft and which can extend and contract in an axial direction; a column jacket having an upper jacket that supports the steering shaft on a side near the steering member, and a lower jacket fixed to a vehicle body to support the steering shaft on the opposite side from the steering member in the axial direction, the column jacket being enabled to extend and contract in the axial direction along with the steering shaft by movement of the upper jacket in the axial direction; an operation member operated to perform extension and contraction adjustment on the column jacket; a lock and unlock mechanism that locks and unlocks the upper jacket in the axial direction in conjunction with an operation of the operation member; a first stopper member fixed to an outer side surface of the upper jacket; and a second stopper member that is supported on the vehicle body, moves in conjunction with the operation of the operation member to an advanced position where the second stopper member faces the first stopper member in the axial direction when the lock and unlock mechanism unlocks the upper jacket, and that moves in conjunction with the operation of the operation member to a retracted position where the second stopper member is retracted from the advanced position when the lock and unlock mechanism locks the upper jacket, characterized by a releasing mechanism that releases the upper jacket toward the opposite side from the steering member at a time of a vehicular collision, wherein, at the time of a vehicular collision, the second stopper member does not come into contact with the first stopper member in the axial direction. a steering member; a steering shaft to which the steering member is coupled at one end of the steering shaft and which can extend and contract in an axial direction; a column jacket having an upper jacket that supports the steering shaft on a side near the steering member, and a lower jacket fixed to a vehicle body to support the steering shaft on the opposite side from the steering member in the axial direction, the column jacket being enabled to extend and contract in the axial direction along with the steering shaft by movement of the upper jacket in the axial direction; an operation member operated to perform extension and contraction adjustment on the column jacket; a lock and unlock mechanism that locks and unlocks the upper jacket in the axial direction in conjunction with an operation of the operation member; a first stopper member fixed to an outer side surface of the upper jacket; and a second stopper member that is supported on the vehicle body, moves in conjunction with the operation of the operation member to an advanced position where the second stopper member faces the first stopper member in the axial direction when the lock and unlock mechanism unlocks the upper jacket, and that moves in conjunction with the operation of the operation member to a retracted position where the second stopper member is retracted from the advanced position when the lock and unlock mechanism locks the upper jacket, characterized by a releasing mechanism that releases the upper jacket toward the opposite side from the steering member at a time of a vehicular collision, wherein, at the time of a vehicular collision, the second stopper member does not come into contact with the first stopper member in the axial direction.