The Zeppelin-Lindau Rs.IV (known incorrectly postwar as the Dornier Rs.IV) was a Riesenflugzeug (Giant aircraft) monoplane all metal flying boat with a stressed skin hull and fuselage developed for the Imperial German Navy to perform long range patrols over the North Sea.

Two aircraft were ordered by the German Kaiserliche Marine (Imperial Navy) in January 1918.

It was a braced parasol monoplane with the fuselage mounted on the wing above both engine nacelles and hull.

The four engines were mounted in push-pull pairs in nacelles large enough to allow in flight access (a requirement of the original Riesenflugzeug giant aircraft type specification by IdFlieg in 1915) between the hull and the wing.

These were staggered to allow propeller disks to overlap slightly so as to reduce adverse yaw when an engine was not running.