A mechanism for moving a retractable door , said mechanism being constrainable to a frame defining a housing space for said door , said mechanism moving said door along a direction of movement between an internal position and an extracted position with respect to said housing space, wherein said mechanism comprises: - guide means connectable to said frame and defining said direction of movement ; - a first fixed supporting element and a second fixed supporting element rigidly connectable to said frame ; - a third supporting element connectable to said door and sliding along said first direction of movement , characterized in that the position of said third supporting element , considered along said direction of movement , is between said first supporting element and said second supporting element , whereby said mechanism comprises a first articulated assembly that connects said first supporting element to said third supporting element and a second articulated assembly that connects said second supporting element to said third supporting element , wherein each of said articulated assemblies assumes at least a closed configuration whereby said third supporting element occupies a position proximal to a corresponding of said fixed supporting elements , and at least an open configuration whereby said third supporting element occupies a position distal from said corresponding fixed supporting element , wherein when said door occupies said retracted position, said first articulated assembly assumes said closed configuration and said second articulated assembly assumes said open configuration, and wherein when said door occupies said extracted position, said first articulated assembly assumes said open configuration and said second articulated assembly assumes said closed configuration. - guide means connectable to said frame and defining said direction of movement ; - a first fixed supporting element and a second fixed supporting element rigidly connectable to said frame ; - a third supporting element connectable to said door and sliding along said first direction of movement , characterized in that considered along said direction of movement , is between said first supporting element and said second supporting element , whereby said mechanism comprises a first articulated assembly that connects said first supporting element to said third supporting element and a second articulated assembly that connects said second supporting element to said third supporting element , wherein each of said articulated assemblies assumes at least a closed configuration whereby said third supporting element occupies a position proximal to a corresponding of said fixed supporting elements , and at least an open configuration whereby said third supporting element occupies a position distal from said corresponding fixed supporting element , wherein when said door occupies said retracted position, said first articulated assembly assumes said closed configuration and said second articulated assembly assumes said open configuration, and wherein when said door occupies said extracted position, said first articulated assembly assumes said open configuration and said second articulated assembly assumes said closed configuration. <EOS>