Bath curtain rod assemblies are disclosed comprising axially movable tubes that may be locked into position in relation with each other. A contact end is extended from one of the tubes to engage and press against a bath support structure to firmly secure the assembly in place. The contact end includes at least one hole for receiving a mechanical fastener such as a screw, which allows the installer to choose whether or not to use mechanical fasteners when installing the rod assembly. The bath curtain rod assemblies may be installed quickly and easily in bath and shower stalls without the necessity of mechanical fasteners or adhesives, while allowing the installer to use mechanical fasteners if desired.