A toilet apparatus according to an embodiment includes a wall-mounted-type toilet body, a sanitary washing device, a switching part, and a fixation member. The toilet body includes a skirt part that forms an outline of a toilet bowl. The sanitary washing device is disposed on a top face of the toilet body and washes a private part of a user. The switching part can execute at least one of a first operation and a second operation, wherein the first operation is to switch a supply and a stop of water to the sanitary washing device, and the second operation is to switch a supply and a stop of electric power to the sanitary washing device, and wherein the first operation and the second operation are executed manually. The fixation member fixes the switching part at a manually operable position inside the skirt part, wherein the switching part is manually operable at the position.