An operation command transmitting device includes a coupling portion coupling a bar portion to a housing so that the bar portion is movable relative to the housing along a central axis and the bar portion is allowed to be tilted around a supporting axis passing through the bar portion, and an abutment portion with which the bar portion comes into abutment when the bar portion is tilted from an untilted neutral condition. The operation command transmitting device includes an axis defining portion defining the supporting axis so that a position of the supporting axis relative to the housing does not change regardless of a tilting of the bar portion and a movement of the bar portion along the central axis.