Abstract: Cover (10) for steam iron (11) of the type having an outside tank, whether incorporating a boiler or not, associated with a base (16), wherein the cover (10) is able to be associated temporarily with the base (16) in order to cover the iron (11) when the latter is not in use and defines at least a closed volume (12) to temporarily contain water (13) which can be selectively connected to the tank or boiler by an adduction device (23) which can be selectively activated when a predetermined minimum level of water inside the tank or boiler has been reached.