The Aviatik (Berg) D.II, the prototypes of which were known as Aviatik 30.22 and Aviatik 30.38, was an Austro-Hungarian sesquiplane fighter aircraft prototype towards the end of the First World War.
The D.II's fuselage was virtually identical to that of the D.I. It was characterised, however, by its short-span, cantilever lower wing, which made it a sesquiplane. Through 1917, 19 D.IIs were built for front-line evaluation. The series 39 aircraft were powered by the Austro-Daimler 6 engine and the series 339 aircraft by the more powerful Austro-Daimler 6 engine driving a four-bladed Jaray propeller and armed with the usual paired Schwarzlose machine guns. A further prototype, (30.38), was produced by fitting a Hiero engine in a D.II airframe.
The first three production aircraft were tested in November 1917, and seven were evaluated at the front later in that year, showing good promise. However, the decision was made that Aviatik should instead produce the Fokker D.VII, and any plans to continue production of the D.II were halted.