An apparatus for filling containers with liquid and in particular viscous media, comprising a filling element which can be introduced at least partially into a mouth of the container to be filled, wherein a filling body of this filling element is configured in such a way that the medium is directed at least also onto a wall of the container, comprising a connecting line for conveying the liquid medium from a reservoir for the liquid medium to the container, wherein the filling element is movable relative to the container in a longitudinal direction (L) of the container. According to the invention, the filling element is movable in the longitudinal direction (L) of the container.