A vaginal manipulator includes a shaft attached to a head and a door connected to the head. The head has an anterior side opposite a posterior side and includes a core fixed to the shaft and a sleeve coupled in a sliding relationship to the core. The door is coupled to the core and is movable relative to the posterior side of the head through an opening provided in the sleeve. A proximal end of the core defines a proximal end of the head and a distal end of the sleeve defines a distal end of the head. The proximal end of the core is fixed to the shaft. The sleeve moves relative to the core to provide the head with an adjustable length between the proximal end of the head and the distal end of the head.