An operation apparatus comprising: an operation unit including an operation detector; a support member that supports the operation unit; and a response force application mechanism configured to apply a response force to the operation unit, wherein the support member comprises a coupling support portion (40, 60) including an elastic deformation portion (41, 42, 61, 62), and the operation unit is fixed to the coupling support portion (40, 60), and wherein the support member comprises a restriction portion (44, 71-75) facing the coupling support portion (40, 60) with a gap interposed therebetween, and the coupling support portion (40, 60) is configured to restrict a movement of the operation unit by coming into contact with the restriction portion (44, 71-75) when the elastic deformation portion (41, 42, 61, 62) is deformed in response to an external force acting on the operation unit, wherein the restriction portion (44, 71-75) comprises a plurality of restriction portions (44a, 44b, 46a, 46b, 71-75), the plurality of restriction portions (44a, 44b, 46a, 46b, 71-75) and the coupling support portion (40, 60) facing each other in a plurality of different directions, and the coupling support portion (40, 60) and the plurality of restriction portions (44a, 44b, 46a, 46b, 71-75) are configured to restrict both of a movement of the operation unit in a direction away from the support member and a movement of the operation unit in directions other than the direction away from the support member by coming into contact with each other comprising restriction in three directions, including restriction of a movement in the front-rear direction, restriction of a movement in the left-right direction, and restriction of a movement in the up-down direction. an operation unit including an operation detector; a support member that supports the operation unit; and a response force application mechanism configured to apply a response force to the operation unit, wherein the support member comprises a coupling support portion (40, 60) including an elastic deformation portion (41, 42, 61, 62), and the operation unit is fixed to the coupling support portion (40, 60), and wherein the support member comprises a restriction portion (44, 71-75) facing the coupling support portion (40, 60) with a gap interposed therebetween, and the coupling support portion (40, 60) is configured to restrict a movement of the operation unit by coming into contact with the restriction portion (44, 71-75) when the elastic deformation portion (41, 42, 61, 62) is deformed in response to an external force acting on the operation unit, wherein the restriction portion (44, 71-75) comprises a plurality of restriction portions (44a, 44b, 46a, 46b, 71-75), the plurality of restriction portions (44a, 44b, 46a, 46b, 71-75) and the coupling support portion (40, 60) facing each other in a plurality of different directions, and the coupling support portion (40, 60) and the plurality of restriction portions (44a, 44b, 46a, 46b, 71-75) are configured to restrict both of a movement of the operation unit in a direction away from the support member and a movement of the operation unit in directions other than the direction away from the support member by coming into contact with each other comprising restriction in three directions, including restriction of a movement in the front-rear direction, restriction of a movement in the left-right direction, and restriction of a movement in the up-down direction.